[Faunus]

Could just put it on the header where it says Mpreg Central, though you may not want to clutter up the title. How big of a page header image can we have? If it is made as large as possible, so "Mpreg Central" is most prominent, but in the bottom right have "Must join to view 18+ art and litterature" in red italics or something that will be noticed before much page exploring is done, then that would probably do the trick. Web design is not my thing though, lol, sticking it there is kindof a cheat, maybe.