This is really great. Thank you! What made you decide to open source it?
We've written a bit more about our motivations in our blog here as well: https://www.sharelatex.com/blog/2014/02/21/sharelatex-is-now...
Presumably you won't really know until your try it, but do you have any data to support that it might increase your revenue (assuming of course that is a goal here - rather than just growth of the number of users of your software - I realise that the two can go hand-in-hand!).
It will be interesting to see how things look in a months time. I'll try to post an update!
(more visitors, more income, ...)
Could be a next HN thread ;)
Edit: the thread above mine didn't exist when i read the comments :P