When will there be enough magazines? Not anytime soon, apparently. “Consider Plenty, coming in November, for upscale conservationists who are into hybrid cars.” Or what about Conceive, dedicated to the singular subject of, well, conception (the kind that involves babies)? “Then there’s Justine, a pun on ‘just teen,’ which came out in April, targeting a demographic of hip, wholesome girls who don’t want headlines about sex tips on a magazine cover lest they die of embarrassment in front of their fathers or boyfriends.” It’s all about niche marketing.