Vanilla, the popular open source forum software, is now embedding sponsored links in every download so when you install it they’re on your site. This strikes me as a bad idea the same way sponsored themes are, except worse because it’s in the core code. This and things like the sale of Pligg say to me that many open source web products are having a hard time transitioning to businesses. It also bothers me when people cite “hosting costs” as the reason for doing something like this. Hosting has never been cheaper, there are plenty of free resoures like Sourceforge and Google Code, and plenty of people would donate hosting if it was asked for, including myself.