Back in 2003, I prototyped a Web site called Lookmarks which would allow you to co-operatively tag and save links. Several other sites (mostly del.icio.us, by virtue of achieving critical mass) have proven that sharing bookmarks can be fun – and improve the organization of your own bookmarks. So, I’ve revived and revised http://www.lookmarks.com. (I wasn’t satisfied with any of the other bookmark Web sites out there).

I found an excellent bookmark tool comparison (PDF file) that a guy called Kossattsch did. (His blog is in German, but the PDF is english).

My advice is to find a site you like and start sharing!