My posts lately have been taken over by My Yahoo. They must be doing something right.
This seems like it could be big. Search through complete dynamic content of bookmarked sites. Retains source of bookmark. RSS feeds. Could be big.
Some things. Import: everyone has been collecting bookmarks in some form in some other system. even yahoo bookmarks. Categories: should be able to assign to multiple categories. In that super flexible del.icio.us way. Collective intelligence. API: open that sucker up, so 3rd party apps can easily tap into this thing.