In response to Josh Catone’s observation that del.icio.us has failed to go mainstream, Richard Ziade offers three hypotheses:

1. Nobody really needs a way to centrally store their bookmarks
2. Most people don’t understand what del.icio.us does
3. People don’t feel compelled to share del.icio.us with others

The winning explanation, I am sure, is #2. Nobody understands what del.icio.us does. I am constantly explaining the nature and value of its social information management capabilities. Just this week, in various meetings on Microsoft’s Redmond campus, I found myself reiterating four of my major uses of del.icio.us.