New key bindings:

ESC
set (or grab) focus to (or from) the textarea input element

alt+n
switch to the news search provided by the same search vendor

alt+w
switch to the web search provided by the same search vendor

alt+/
switch between yahoo and google search

alt+c
switch to baidu chinese search

alt+PageDown
show the next page

alt+PageUp
show the previous page

Interested to hear which shortcut you like most, or what other shortcut could be useful (well, search results navigation shortcuts may be the next thing to add).

PS: Refactor the script and add keyboard enhancement for twitter.

Update 04/27/08: Add support for Flickr

Update 04/28/08: Add support for Jiwai.de

Update 05/13/08: Add support for del.icio.us

Update 06/22/08: Add a generic PageUpDn handler for all other un-supported pages (ie. pages not listed as supported here). The idea is to make a best-effort attempt to increase/decrease the last number appearing in the URL if any to load the previous/next page. If you don't like it, please either don't use the Alt+PgUp or Alt+PgDn shortcuts for those un-supported pages or remove "http://*" from the script's URL triggering patterns.