I like Tag Surfer, and understand that there needs to be a default category ("Uncategorized"). Can this tag be made de-selectable once other tags are listed in the side-bar? Maybe if the "Uncategorized" tag is shown as a check-box on the side that is checked and greyed-out until another tag is added? The idea being that this could allow the users to stop spam bloggers from eating all of the available real-estate on the Tag Surfer page, since the vast majority seem to be using the "Uncategorized" tag.
An alternative approach, if this cannot work, might be to simply not allow blogs to be picked up by Tag Surfer if the "Uncategorized" tag is the only tag present, but this sounds like it could have some undesirable second-order effects...
Thanks!