The Firebug story is a good and a bad thing. For starters the only reason I still use Firefox is because Firebug is awesome. In the article at least Firefox gives credit to Firebug where it's due, but it's a bit like OS X notifications taking Growl's idea and leaving Growl to rot. Maybe that's a bit dramatic, but it's a common story now a days. Indie developer develops something awesome for big companies eco-system. Big company takes idea and leaves indie dev to die. I am not privy to the entire story but it sure would have been nice if mozilla could have at least done an acquire-hire for the Firebug team (assuming they wanted it). You know show some love for the greatness they gave to the dev community.