BlogHer, which runs an ad network, a guide to women bloggers, and conferences, has received an investment from Venrock, the VC confirmed to VentureBeat. David Siminoff, who joined Venrock earlier this year and is interested in media investments, is responsible, according to VB. Otherwise, details are sketchy—no amount, no word on other investors, etc. One of the BlogHer founders told me they were weeks away from an announcement and didn’t confirm or deny. More as we know it.