since you were asking about tgp site scripts in the hosting forum, I am assuming you are talking about the bandwidth needed to run a thumb tgp site. Lets assume you buy some initial traffic and manage to get it up to about 5000 visits a day, with a half decent amount of thumbs plus your archive pages, you would probably be looking at about 50G traffic per month.

If you also create your own galleries and submit them to various other TGP sites (with your own recip button as one of the 3 links so you can get some traffic leaks too) then doing one gallery a day, 5 days a week, you should be able to get 25,000-30,000 hits to your galleries a day so aim for about 300-500G per month traffic.

those are just rough estimates, if you work really hard you can massively exceed them but if you can also sit back and get next to no traffic too :specs:

cheers,
Luke