> Either that or they are using this to attract engineers. On a related note (I can't speak for Dropbox specifically) there are many engineers who desire their

> Either that or they are using this to attract engineers. On a related note (I can't speak for Dropbox specifically) there are many engineers who desire their work to be open source for their own motivations, and when it's not a significant business risk to do so, nice companies will allow it. So it works on two fronts, as a "hey, we'll let you open source your stuff" and a "hey, we've got people here who care about and contribute to open source."