Clean TGP = a TGP with no blind links or trades in the gallery list, such as hun, al4a, or elephant list. Good examples of TGP's that are not clean would be any TGP running a trade script that sends a percentage of their traffic to a trade, such as Call Kelly's or Fucking Series... and even JJJ's, while not script run is NOT a clean TGP.
A clean gallery is kind of a judgement call. Everyone has their own opinions but basically DrewKole was right... any gallery that has minimal ads and no tricks like mouse overs or thumbs linked to HTML pages.
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