TGP meaning in Messaging ?

A thumbnail gallery post (TGP) is a website that provides links to free Internet pornography. TGP sites consist of categorized lists (more often tables) of small pictures (called "thumbnails") linked to full-size images or redirected to another website. Sites containing thumbs that lead to galleries with video content are called movie gallery posts (MGP). The main benefit of TGP/MGP is that the surfer can browse through the thumbnails to get an impression of the content provided by a gallery without actually visiting it, saving on broadband usage.

However, TGP sites are open to abuse, with the most abusive form being “circle jerk” TGP sites (CJ), that contain links that misdirect surfers to sites they did not wish to see.

Many TGP sites are free to users, but commonly are ad-driven. In affiliate marketing terms, TGPs are the affiliates that drive new traffic to the product producers, paysites. Paysites offer free hosted galleries (FHGs) in an effort to attract paying customers, and it is these FHGs, as well as chains of TGPs, that a TGP links to.