Thank you, operator, and good morning, everyone. We are glad you can join us for Shopify's third quarter 2017 conference call. We are joined this morning by Tobi Lütke, Shopify's CEO; Harley Finkelstein, our dynamic Chief Operating Officer; and Russ Jones, our CFO. After prepared remarks we will open it up for your questions. Once again today, we will make forward-looking statements on the call. These are based on current assumptions and are subject to risks and uncertainties that could cause actual results to differ materially from those projected. We undertake no obligation to update these statements, except as required by law. Information about these risks and uncertainties is included in our press release this morning as well as in our filings with Canadian and U.S. Securities Regulators. Also, our commentary today will include adjusted financial measures, which are non-GAAP measures. These should be considered as a supplement to and not as a substitute for GAAP financial measures. Reconciliations between the two can be found in our earnings press release, which is available on our website. And finally, note that because we report in U.S. dollars, all amounts discussed today are in U.S. dollars unless we tell you otherwise. With that, I turn the call over to Tobi.
Tobi Lütke : Thanks Katie. Good morning, everyone. Thank you for joining the call. This is going to be fun one. Let me get started by saying that I personally really love this experience of taking company from nothing and growing into to be a trusted public company. When I get off on its journey I was hoping to learn about such a large variety of different things. I love learning about new things. So this quarter we learned about something new that I haven't encountered before and I realized that many people on this call are here because you would like us to talk about that. For those who don't know during this quarter we were targeted by short selling troll who made all made sort of preposterous claims. Before we get into I want to address some criticism that the company didn't response strongly and quickly enough. We take this as constructive feedback but our rationales are following. All of us at Shopify laser focused on building valuable and enduring company. We are busy growing our merchant base, launching new features and getting everybody ready for Black Friday and Solo Monday which is coming up soon. And I honestly believe that the best companies do not engage in short-term stock price sort of management if you will and neither do we. Some days the stock is high and some days it's lower but over the course of a year it will approximate to how the company is doing. So given that as I twitted we'll deal with this during the financial call because this is the time we reserve every quarter for these kinds of activities. So I want to correct three key points of misinformation. And just to be absolutely clear, we consulted outside legal counsel and that also categorically dismissed this claims as unsubstantiated. I can definitely state that one, we do not sell business opportunities, and we sell a commerce platform. Two, we comply with FTC rules and consistently inform our affiliate of illegal obligation. And three, we do not promise merchant success, far from it. In fact, most of our content is about how hard entrepreneurship is because it is hard. And we are here to have those who are willing to try it. Every 90 seconds an entrepreneur makes their first sale on our platform. We celebrate and cherish his accomplishment because it's not easy. This is what we are most proud of. So implying that these businesses are somehow illegitimate as an insult to their hard work. And here is the really important piece that some of us got missed. Why we see ourselves as a catalyst ambition and we strive to low our learning curve for entrepreneurship so everyone can participate. Most of our revenue actually comes from a merchant successfully selling on Shopify. The more merchant sales the more payment we facilitate, the more shipping we assist, the more local capital we provide. This is how we have been updated to deliver results that we do quarter after quarter because our merchants are succeeding. So even though some entrepreneurs have failed and stop paying $29 per month this floor, hundreds of thousands is thriving and we thrive alongside with them. Okay. I hope this case up things in the matter. Let's move on. I want to talk about why we are so well positioned to be 100 year company. Companies who want to be around 400 years need to solve the real problem in the real world. Now I realize that Silicon Valley has sort of ruined the phrase, changed the world for all tech companies. But I want to say that we are trying change a world in one significant way and that we don't use this as some hollow phrase for just promoting some new app in the app store. When you open the New York Times business section what you really read is that small companies are struggling and big companies are getting insanely big. There is a little variance and noise in this data because non digital companies of all sizes are failing at the same time but overall that's a trend. I don't have time here to dig and why this is but the change we want to make is that we want to give the small businesses a chance to survive and thrive. The world needs millions of small businesses to ensure sustainable future for economies and jobs instead of handful of mega companies. We are fully focused on retail and commerce and here few trends that we are seeing and which we are supporting to make this happen. First, slow and long established large retail so one of it is [absent] by laser focused small brands that share common value as a customers. Retail shifting to a form of experience gives an emphasis on story telling and that gives small business a leg up. Second, manufacturing is changing. Most brands in the world get their product created in the same factories. But today small business can access high quality manufacturing site which was previously have been prohibited due to CapEx. Third, innovation in the supply chain shipping leading to a new kind of approach. One is forcing big change in the retail landscape. The winning formula for retailer is now in asset light infrastructure combined with a highly personalized and in directive consumer experience. Finally, to it's like Shopify, this is build in data reporting and then to tracking shipping, retail floor social channel, multi channel in general, actually mean that new businesses on day one are using better technology even any of their competitors in the market they enter. Or at least they might if so compares on using Shopify themselves. You put all these things together and end up with a new formula. Now everyone can wrap their hats around this new retail and discretion model though. They think for some reasons that there are something wrong with not holding an inventory and building a drop shipping business. Or it's not having a brick-and-motors store at a time when physical stores are closing in record numbers. Or that not having tens of millions of dollars with sales means that you don't exist. We fiercely disagree. While we do have stores selling tens or even hundreds of millions of dollars a year on Shopify because of the changes I just described. We have many, many stores just getting launched. All kind of merchants use Shopify. They are creators and innovators. They are students trying to pay for school. They have a little art gallery around the corner. They are merchants but have scaled from first sale than more demand. You saw some inspiring examples of these at our build a bigger celebration just last month when we took them to ring the bell at the New York Stock Exchange or any of our numerous shop clouds events all across North America. Of course it won't be easier for us to focus exclusively on serving large businesses and large enterprises with big budget. We would be part of very crowd market where we fight for single changes to market share. But we've never gone for easy, what we do instead as grow this market. Invite people to try building new business, telling them what things to know and be honest what they need to hear. All future big success stories have started somewhere. And with that I am going to give it over to Harley.