http://del.icio.us or http://delicious.com is the grandaddy and most popular. My bookmarks are at http://delicious.com/springnet http://spurl.net - the "most searchable" from the spurl site Spurl.net is a free on-line bookmarking service and search engine. It allows you to store and quickly access again all the interesting pages you find on the web from any Internet connected computer. With Spurl.net you will never have to lose a good link again. You can search your links, notes and in fact the entire text of all the pages you've ever "spurled". You can start by uploading the bookmarks from all your computers - after that all your bookmarks will be accessible in one place. And because thousands of other users are using Spurl.net as well, you will discover interesting links through recommendations, hot lists and more. http://furl.net - the "most organizable" from the furl site "Say goodbye to lost bookmarks. Forget about searching your browser history and email folders." -- Kim Komando, The Kim Komando Show "Social online bookmarking for the masses." -- Jim Wentzloff, ClassroomHelp.com "Every page you care about is now saved forever, and is searchable....share your PersonalWeb with others." -- John Battelle, BattelleMedia.com http://bookmarks.yahoo.com has bookmarks - the "most polished" http://nedwolf.com/Web-Applications.htm has a list of these and other free web apps so you can start using Web 2.0 instead of wondering what the hell it is.