Hmmm...so two weeks after the site's up the first promotion kicks in?
Offhand I'd think it better to have a promotion at launch as a "Opening Week" kind of thing. Ok, maybe not a core rule book (so as to have two weeks to work out kinks and glitches) but some sort of sampler or tidbit from the GDW archives. Not that the current page doesn't preclude such a thing from happening.