I'm using them all at the moment, only2clicks being my homepage with my main bookmarks on and links to the others. As an example I use speedymarks for photo/photo editing sites, Tizmos for Torrent sites. You get the picture.
Thanks for these. Previously I was using SpeedDial for Firefox which was customisable and much better than looking at the boring Google homepage or waiting for netvibes to load *which I find irritating seeing how it's suppose to act as a homepage*.