fun mozilla stuff:

The March 1 nightly is super cool. The JS Debugger now does profiling, so you can tune your JS intelligently. More info @ mozillazine
mr idontsmoke informs me about the ‘Properties’ context menu in Mozilla. Mouse over, right click, and select ‘Properties’ to see all kinds of gory details of the element your in. This is one way around Mozilla’s limited tooltip display.