Firefox 8 cracks down on add-ons

The new browser won't let new third-party add-ons run until users give the say-so, and it suggests old ones be disabled. Also: Twitter search and a tab tune-up.<img src="http://feeds.feedburner.com/~r/cnet/tcoc/~4/gCdaVA5Fw0s" height="1" width="1"/> [More]