For all the talk about how African Americans use the Internet and social media these days, there's an even larger conversation taking place about why more black couples aren't married.

Google holds on to overall first place for monthly unique visitors, while Yahoo!Nielsen's TV measurement first faced a major crisis of confidence more than 20 years ago, amid growing skepticism from networks and surprising ratings fluctuations."When those numbers became unreliable, inconsistent, inaccurate, unexplainable," a TV researcher said in 1992, "they just threw into chaos almost everything we did, because they were the basis on which the business was built." There were other challenges before and since, including the controversial introduction of "people meters" in 1987 and audience fragmentation stemming from the cable boom and the arrival of the VCR.The site had 410,000 African-American visitors during June 2011, they say.African Americans also made up 12 percent of the audience, Black People Meet's parent site.