According to Hitwise data issued last week (while I was on vacation), the market share of visits to social networking sites fell 19% between June 2007 and June 2008. What that means is that of all sites that people in the US visit on the Internet, people were less likely to visit social network sites than they were last year at this time. As of the first week of June, 6.82% of visits to Web sites were to the social network category, according to Hitwise’s blog.
If the downward trend in market share of visits continues, and is correlated with data from other researchers (comScore, Nielsen, Compete), then there could be trouble in the waters for social network sites. I’ll be watching that data point carefully.
The good news is that average time spent on social network sites continues to climb, according to Hitwise – up 9% to 27.5 minutes per month in June 2008 vs. June 2007. MySpace was still by far the dominant social network based on market share – but things look very different in the UK, where Facebook and Bebo are more dominant.