social bookmarks manager; allows you to easily add sites you like to your personal collection of links, to categorize those sites with keywords, and to share your collection not only between your own browsers, but also with others.
a technology news website that combines social bookmarking, blogging, RSS, and non-hierarchical editorial control. With digg, users submit stories for review, but rather than allowing an editor to decide which stories go on the homepage, the users do.
a list of 50+ similar services that are absolutely free and require no e-mail registration to use. Included in the list are file size limits, download limits and the amount of time the file remains on the server for download.
Sometimes upgrading to a newer version can be a good thing. Other times, your computer may not be compatible with the new version, the new version is bloated, or all the good options are no longer available.