TGP = Thumbnail Gallery Post
Text TGP links to TGP galleries with a text link (e.g.
http://www.thehun.com/)
Thumb TGP links to TGP galleries using a thumbnail pic. Most (if not all) thumb TGPs us skimming, that means a certain percentage of clicks on thumbnails go to other sites rather than the TGP gallery. example:
http://www.8teenporn.com/
MGP = Movies instead of pictures
Text MGP =
http://www.video-post.com/main.html
Thumb MGP =
http://www.pandamovies.com/