You're not limited to using just one website as your web browser's home page...
If you regularly visit the same set of websites each day — like Google Reader, the Winnefox Extranet, and Unshelved — you can set them all to display automagically each time you start your web browser.
I usually download a new version of Firefox as soon as its available, but have gotten "burned" because many extensions & add-ons I use aren't immediately compatible -- developers usually need a couple of days to update an add-on to work with the latest version of Firefox.
A couple of days ago I got a question from a library director who wanted to know how she could save her Firefox bookmarks. (She's preparing her laptop to be wiped clean so Windows 7 can be installed, and wants to be able to copy the bookmarks & then re-install them on the PC.)
The Back button in Firefox allows you to move backwards to revisit pages you've seen during your current session. You can click the button to go back one page at a time, or you can "leapfrog" back by more than one step.
Google is asking people to try out its new search infrastructure code-named "Caffeine". Most everybody won't notice a major difference in search results, but just the act of testing Caffeine will help Google engineers speed up and improve search algorithms.