Microsummaries, also called Live Titles are a neat new feature in Firefox 2.0 where you instruct the browser to substitute some useful content from a Web site in place of its title, particularly in bookmarks.

"Places is a new system for storing bookmarks, history, and other information about pages. It is scheduled to go into Firefox 3."

voilà qui est parfait pour promouvoir son site (suivez mon regard ;) )

(it's also the date format used in firefox bookmarks, so it can be useful to search a bookmark by date)

let you customize/replace/add favicons in your Firefox bookmarks