YouTube Grows the Pie; MySpace Suffers

Last month we featured measurement from of the top 20 online video sites, according to its panel. Compete ranks according to “sessions” spent on a site, but it’s interesting to note that the number of unique visitors to one or more of the top 20 sites has increased to 60 million in January from 58 million in December. The online video market appears to be both consolidating and growing.

YouTube has lengthened its lead, seeing a 43.3 market share, up from 41.1 percent in December. It’s also seeing 31.7 million unique visitors, up from 29.7 million in December, absorbing much of the unique visitor jump. Nearly every other site also saw an upwards tick in the last month, with the notable exception of MySpace, the number two player.

MySpace now has a 16.4 percent share of sessions, down from 19.3 percent last month. That’s 36 million sessions, down from 40.9 in December. The unique visitor difference is a little less drastic; 16 million in January versus 17.6 million in December. Bolt, which sold itself to GoFish to end its lawsuit trouble, also took a hit, as did Top TV Bytes.

Don’t take these statistics as the end-all-be-all, but they’re worth a look, below the jump.

First, the new stuff: January.

And for comparison’s sake: December.

Note that Compete did not include MSN Video in the December sample.