Originally Posted by WiredGuy

Think about the network flow of a link from a webmaster to your hosted galleries.

A webmaster owns a tgp/mgp. Almost 99% of the time, the link is done via a script, not a hard link. That right there is a big problem for SE's. Then, add to the mix that's the only time that link is probably ever seen. Other webmasters have different webmaster ids so the most times you really have a link to your galleries is via 1 webmaster linking a to a gallery with 1 unique code via a script redirect.

The flow of backlinks is really badly made that it won't pull in top rankings unless the same webmaster is linking to those galleries via hundreds of different sites.
WG