Mozilla Firefox "Hacks"

Not really hacks, but because I use FF mostly these are the some of the things i use.
Just copy & paste about line in your browser. Some you will know, others just there for fun

about:mozilla
about:robots
about:
about:blocked
about:buildconfig
about:cache
about:config
about:crashes
about:credits
about:license
about:logo
about:mozilla
about:neterror
about:plugins
about:rights

just some more i use on mobile nice share dweeb

about:home
Shows the Firefox home page with a Google
search bar.

about:addons
Shows the addons page

about:sync-tabs
Shows tabs synced from other computers
(tab syncing has to be enabled).

about:sync-logs
Shows the sync logs

about:cache?device=disk
Shows the disk cache device info, keys, and
data.

about:cache?device=memory
Shows the memory cache device info, keys,
and data.

about:crashes
Shows details of crashes submitted by
Mozilla's crash reporter.

about:memory
Shows memory usage.

about:support
Shows troubleshooting information.

about:privatebrowsing
Can be used to switch to private browsing
mode.

about:sessionrestore
Shows an interface for viewing about last
session.

about:feeds
Shows the page used when clicking the rss
feed icon in the address bar.