A free hosted gallery (FHG) is a web page of sample content (usually pornography) which is provided at no charge to affiliates of subscription websites (paysites).
Affiliates promote these galleries to web surfers in order to drive web traffic to the paysite; every subscription sold generates a commission for the affiliate.
The FHGs are usually hosted by the paysite and employ a simple URL-based system to distinguish between affiliates, so that commissions will be paid to the right party.
Affiliates typically use FHGs to populate their own fake thumbnail gallery post (TGP) websites.
Nevertheless, most adult site sponsor programs still provide free hosted galleries to affiliates.