Dan Rosensweig
Analyst · JP Morgan. Please proceed with your question.
Yes, the attach rate had a great year and had another great quarter and we expect that to continue. And the reason for that is because of the way we're building the company, which is Chegg is always going to be designed to be a large platform with a large brand interconnected services and using the proprietary data in our student graph to be able to not only know things specifically but infer things as a result of that make logical connections. So now, when we know your textbook and your college which we know if you go through there, we could obviously align you with any one of the 23,000 ISBN that are currently in the service or in the future with any of the nearly 5 million questions that are currently in essay queue. So, that's just getting better and better, then our ability to be able to put it in the right places at the right time. We know when your midterms are, we know when your finals are, we know when homework is assigned. And each time we do that, and each time we personalize it, we get a better attach rate. And we've seen that in textbooks. In the case of tutoring, and again if you come to out with then you'll see exactly where we laid out in the products. We're getting really sophisticated with tutoring, so if you're inside of Chegg's Study, we not only know who you are, we not only have your credit, we not only know your school, we not only know your class, we not only know your textbook but we actually know the exact problem you're on, the chapter you're on and we can connect you to a tutor that may be about the book, the chapter, or the specific question that you're struggling with. That's the kind of differentiation that our student graph allows us to do that nobody else can do, and that’s why we're seeing nearly half the customers in tutors coming from Chegg Study. This was the goal when we started to build Chegg six years ago, and we're starting to see those result and you see it allows us to grow faster, lower the cost. And so, you're beginning to see it would be profitable each quarter, not just certain quarters. So, it’s a big transformation for us. So, we could expect that, we believe those will just get better overtime. But they had a great quarter.