Agree with Mr Yum on this one. If anything have the links from the bottom of each gallery go to the mainpage in case a surfer comes in to either gallery from a SE or unknown link. Gives them a chance to see what is normally a much more ad-oriented page.
Also, if a surfer clicks the link to the mainpage instead of hitting the back button during the normal course of surfing the freesite (warning, main, gallery) then he ends up at the top of the mainpage and not wherever he scrolled down to, to see the first gallery, so he has to look at all the ads again
