I've never run one but I imagine personality counts for a lot with a TGP and getting surfers to come back.
Maybe I'm wrong but I would have thought standing out from the crowd a bit, give it an identity - The Hun, Persian Kitty, Tommy's Bookmarks, Green Guy etc, surfers remember those names and even if they don't bookmark the site if they see the link with the name on another site they will go back if they had a good experience at the site before.
