Markaboo, by Christian Romney and Jean Thomas from a company called tglo — is a new social bookmarking tool — it includes all the basic fields for URL, title, tags and description. There is a nice option to view all your tags and click those you want to apply. MarkaBoo makes it easy to organize your data and share it with others. Bookmark websites, files and notes side-by-side from your browser, email, or mobile phone.
Some of things you can do with MarkaBoo...
Create blogs and podcasts
Host online study groups
Create scrapbooks and photo albums
Share music and video playlists