Useless Warrior replied before I could post...but 'll post this anyway seeing as I've typed it.
I read somewhere a while back that the back button is one of the most widely used buttons of all. Your brain can get you to your back button with your eyes closed...almost.
The idea with the Gallery One thing is that you want the surfer to go from there back to your main page before hitting Gallery Two. Thus showing him those precious ads again before he/she looks at the second gallery. More exposure!
On the second gallery I usually put a small sponsor or hub link at the bottom of mine instead of a "Back To The Main Page" link, hoping that the eyes will drift there if they used that method on Gallery One to return to the main page.
Phew. Did that make sense?
Navigation issues could possibly get you rejected at some link lists, but I've yet to be rejected for doing it this way. At least I don't think I have.
Keeping things clear and trick-free for the surfer when it comes to navigation should mean less rejections. Just make it clear that each link tells them where they are going, there's absolutely no point in trying to deceive anyone. Obviously it's better to get accepted and give yourself a shot at a sale than be rejected and have no chance.
