I do have to commend you for ingenuity, even if the motive behind the first post was a bit sneaky.
Perhaps offering to write ads, site text, proofread blog posts, etc. might be better received? I know some ladies have pretty bare bones sites because they have no idea what to put on them, and others who dread trying to come up with new text for their ads every week. Good writing skills are not something everyone has, and I bet there might be some ladies out there who would jump at the chance for some assistance with that part of the biz.