Firefox
Firefox (note the correct capitalization) is the current name of
Mozilla's browser-only package, formerly known as "Firebird" and "Phoenix". Mozilla's Gekko web browsing
engine (what Firefox is based off of) is being implemented into
SL and, so far, is used in its help menu.
Firefox is the best web browser there is. You should be using it to read the LSL Wiki.
Get it at
http://www.mozilla.org/products/firefox/.