Are you talking tgp sites or tgp galleries ? If your talking about doing a tgp that is listing galleries and udating it ? And getting that listed on a link list? That can be done
But the site must follow the guide lines of the LL
Now if you going to do a new tgp make it clean as hell build your traffic with some good soild link swaps and build you PR and bookmarker base dont kill the sufer with a sea of sponsor links or use a traffic script just to build your traffic for the sake or numbers
Yes there are allot of tgps and LL out there but if you build it and take the time to update and stay with it you can make your own mark