Bookmark tagging and social annotation with Diigo

The other day I discovered an awesome tool to surf and discover new web pages in Internet. Its name is Diigo and you can find it in www.diigo.com. For those who already know del.icio.us, just tell you that Diigo is just more power. You can add comments and sticky notes to any web page and bookmark them with tags. When you search the bookmarks, Diigo not only searches the names and comments, it searches the webpages your bookmarks point to. Awesome. You can surf other’s people bookmarks as well. I will never ever bookmark any page with Firefox as it does not allow tagging.