Add persistent searches to Gmail with greasemonkey
Posted on May 11, 2005 at 17:07See this blog post from persistent.info. It is a greasemonkey script that adds the ability to define and save persisten searches. Saved searches show up in a little orange box along the left side of the screen.

Uses cookies to track the “contents” of the searches and might need some page refreshing (I had to log out and log back in to get it to work). Very cool. See here for other Google and Gmail greasemonkey scripts.