I saw that it was from sourceforge and never even bothered clicking so as to not give them traffic. Will the taint ever leave Sourceforge? I think not, they squandered any good will forever.
Is there any kind of browser extension that detects this sort of spam?
I know that's a really tall order, but I'd love some kind of tool that tries to do something close to this, even if it's just a listing of other sites that have the same text with a button click.