Crain’s New York Business: Five-year old women’s lifestyle site PureWow never had reservations about native advertising: It’s been running sponsored content pretty much from the day it launched. Now the Manhattan-based publisher, which targets women in their 30s, has just raised $2.5 million from the likes of Bob Pittman, Gary Vaynerchuk and Whoopi Goldberg, and said it will double revenue this year to at least $10 million.