Here’s something: since the release of Valve’s free Source-based co-op shooter Alien Swarm which surprised us all last year, hippies and socialists have been able to get their hands on a Source-based game without paying a thing, which in turn lets them play those lovely Source mods for free as well. Well, we’ve just received word from Valve’s Robin Walker that due to the recent release of a free Team Fortress 2, the Source SDK will soon become free to use in its entirety, for everyone.(more…)