One last FHG.
http://rubberdollies.com/hg/w09em/?id=468093
the pics are cca 155 k and the size is 623x831... and the content is true glamour.
Now I think you can promote a sponsor with similar and hq content only shot by the same photographer or use their pics with their permission and do your own design which should be different from that of the FHG's.
On the other hand, if you promote sponsors with too good pics who have put together a shitty pay site using non exclusive content on sale, then the result is chargeback.