Thanks John and thank you everyone for joining us today. Before I discuss our performance, as always I want to let you know that we posted a brief information deck on our website that contains supporting materials for today's call. To begin with some of our key financial outcomes in 2018. In February, we sold Webdam for gross proceeds of approximately $49 million which was approximately 3x our purchase price in 2011 and in February of 2018 we recorded a gain of $38.6 million for that sale. CapEx for 2018 totaled $34.9 million which was materially below our prior year as well as favorable to our previous guidance. In August of 2018, we paid a dividend of $105 million and consistent with our liquidity expectations communicated at that time of the dividend that we expected to end 2018 with a balance in the $200 million to $250 million range and we came in at $230 million. Reviewing some of our key metrics in the fourth quarter. Our customer base grew by 3.5% to nearly 1.9 million customers. Paid downloads grew by 6.6% to an all-time high of $46.8 million. Revenue per download grew by 2.1% on a reported basis and 3.3% on a constant currency basis. Our image library expanded by 42% to over 240 million images and our video library increased by 44% to over 13 million clips. Revenue growth is reported in the fourth quarter was 6.7%. Two items which impacted our fourth quarter revenue growth were the sale of Webdam in February 2018 and foreign currency fluctuations. Excluding the impact of foreign currency movements, revenue growth was approximately 7.9% in the fourth quarter compared to the 2017 period. Excluding impact of Webdam from the 2017 fourth quarter revenue growth in the fourth quarter was approximately 10.1%. And if we exclude both FX and Webdam impacts in the quarter revenue grew 11.3%. Operating income was $15.6 million in the fourth quarter, an increase of over 117% driven by our continues cost management efforts and growth in revenue. Operating income also benefited from a $2 million reduction in our indirect tax accruals. Adjusted EBITDA for the quarter grew 45.6% to $33.9 million, which compares to $23.3 million in the same period a year ago, driven by the increase in operating income which was partially offset by an increase in depreciation and amortization. As Jon mentioned in his comments, revenue in the fourth quarter from our e-commerce channel improved 8.8% to $95.6 million as compared to the prior year fourth quarter. This growth was driven by improved marketing efficiencies and platform improvements which led to steady acquisition and retention trends throughout 2018. Our enterprise channel revenue grew 12.1% to $66.5 million and the enterprise channel represented 41% of our total revenue in the fourth quarter as compared to 39% in the prior year. GAAP net income in the fourth quarter was $14.9 million or $0.42 per diluted share, an increase from net income of $2.1 million or $0.06 per diluted share in the fourth quarter of 2017. This represented a 625% increase year-over-year. Adjusted net income which among other items excludes the gain on the sale of Webdam was $20.9 million or $0.59 per diluted chair for the fourth quarter of 2018 as compared to $10.6 million or $0.30 per diluted share in the fourth quarter of 2017 which represented a 97% increase year-over-year. Consistent with prior periods in the fourth quarter of 2018 approximately 66% of our revenues were from customers outside the United States. Of that 66% amount about half were derived from customers in Europe and the other half was from Asia-Pac, Latin America, Canada and the Middle East. Fourth-quarter operating expenses excluding stock-based compensation were relatively flat versus prior year driven by an increase in royalty expense which is a result of increased revenue performance and that's offset by lower product and G&A expenses. Contributor royalty expense was approximately 26.7% of revenue which has remained relatively constant as compared to recent prior quarters. Before I go into some of our major expense categories, I'd like to reiterate that we have taken and continue to take actions to reduce the growth rate of our expenses. While we saw results in improving margin through 2018, expense management is an ongoing effort that we believe will continue to yield improvement, improved results in 2019 and beyond. As I discussed the expense categories my comments will exclude stock based compensation expense. And I'll refer --and the variance as I refer to will be from the fourth quarter of 2018 as compared to the fourth quarter of last year. Sales and marketing expenses increased 6%. Generally this category of spend is split equally between marketing spend and the cost of our enterprise sales organization. Sales and marketing expense was flat at 26% of revenue in the fourth quarter of 2018 as compared to prior year. Product development cost decreased 26% versus a fourth quarter last year, primarily due to lower personnel and consulting costs. As a percentage of revenue, product development costs were 6% of revenue for the quarter versus 9% of revenue in the 2017 period. General and administrative expenses decreased 11% from the fourth quarter of 2017. As a percentage of revenue, general and administrative expenses were 12% as compared with 14% in the fourth quarter of 2017. The decrease in G&A was the result of cost management efforts and a $2 million benefit from the reduction of the indirect tax accrual I mentioned earlier. Moving up to taxes. Income tax expense was $1.8 million in the fourth quarter of 2018 versus an expense of $6.8 million in the fourth quarter of last year. For the full year, income tax expense decreased by $1.9 million as compared to the full year of 2017. The lower effective tax rate during 2018 was primarily a result of the Tax Cuts and Jobs Act which among other things lowered our US statutory federal tax rate from 35% to 21% effective January 1, 2018. During the year ended 12/31/18, our net cash taxes paid were approximately $600,000 as compared to $5 million paid in 2017. Taking a look at the deferred revenue, as a reminder at year-end 2017, the deferred revenue balance was $137.7 million excluding deferred revenue related to Webdam and adjusted for the adoption of new revenue recognition rules which went into effect on January 1st, 2018. The deferred revenue balance as of December 31, 2018 was $139.6 million of which approximately 40% relates to our e-commerce channel and 60% to our Enterprise Channel. Moving to cash flows and the balance sheet. We continue to maintain a strong positive working capital position. For the fourth quarter, net cash flow from operations was $33.7 million, a decrease of $2.8 million from the fourth quarter of 2017. In the quarter free cash flow is $27.3 million, an increase of $8.6 million from the fourth quarter of 2017. Free cash flow is cash flow from operations left cash payments for capital expenditures and content purchases. The increase in free cash flow was primarily driven by lower capital expenditures, offset by a decrease in cash provided by operations, as well as a slight increase in the cash used to acquire content. And lastly, as I mentioned in the fourth quarter of 2018, capital expenditures were at $5.3 million, a decrease from the $17.4 million of CapEx in the fourth quarter of 2017. For the full year ending December 31st, 2018, net cash flow from operations was $102.2 million which is a decrease of $5.8 million from 2017. Free cash flow was $63.5 million which is an increase of $13.5 million from 2017. And this change was primarily driven by lower capital expenditures, partially offset by a decrease in cash provided by operations. In 2018, for the full year our capital expenditures were $34.9 million, a decrease of more than $20 million from the $55.1 million of CapEx in 2017. And below our 2018 guidance of $48 million. We are continuing to actively manage our capital expenditures and believe that the levels we are managing to as of the end of 2018 are reasonable for the business of our size and growth. And so as we talk about 2019 guidance, you'll see that this $35 million is the approximate range that we expect to be in. At the end of the quarter, we had approximately $231 million of cash and cash equivalents. As a reminder, on August 29th of 2018, we paid a special non-recurring dividend of $3 per share totaling approximately $105 million. As a reminder, in our second quarter earnings call, I noted that we expected to end the year between $200 million and $250 million in cash. And our year-end balance was near the center of that range. Our liquidity strategy continues to be to maintain a strong cash position that enables us to fund operations, while also providing us with the considerable flexibility to pursue operational and strategic growth opportunities. As we have done historically, we will continue to evaluate the appropriate use of cash generated in our business to maximize returns for shareholders. Overall, we continue to deliver growth across all of our business channels and we believe the work we have done managing expenses and strengthening our balance sheet will enable us to pursue further gains in revenue and profitability in 2019. And so moving to our financial guidance for 2019. We expect revenue of between $685 million to $695 million which is growth of 10% to 12%. Adjusted EBITDA of between $118 million and $123 million representing growth of 12% to 17%. Income from operations of between approximately $37 million to $47 million. Non-cash equity based compensation expense of approximately $25 million. Capital expenditures including capitalized labor of approximately $37million. And an effective tax rate for 2019, we expect that to be in the low to mid 20% range. Given our financial guidance for 2019, we believe that our revenue growth will continue to improve. However, at this time while we continue to drive for revenue growth of approximately 20% in the long term, we expect near-term growth rates to be below that level. As it relates to margins, we believe that we will continue to build upon the adjusted EBITDA margin of 17% that was achieved in 2018. Cost management measures combined with revenue growth are expected to generate increased margins as our guidance for 2019 implies. We appreciate your time today and your interest in Shutterstock. And now Jon and I will be happy to answer any questions you may have. Skyler, please prompt the participants for questions.