Works with Coursera, EdX, Udacity, The Great Courses, and Udemy courses.

I'd actually recommend changing the tagline on the site, as well, to be more clear: "Find the perfect study buddy for all your Coursera, EdX, and Udacity courses."

Just put that sentence on your site.

It would also be helpful to see "class sizes" for a given course. I don't want to sign up only to find after the fact that nobody is taking the same course as me.