Industry analysts comScore say figures show MySpace lost more than 10 million unique users worldwide between January and February.
There were almost 63 million users of MySpace in February 2011, down from more than 73 million. Year on year the site has lost almost 50 million users, down from close to 110 million in February 2010.
The loss of users comes despite a series of changes to the site to make it more about music. But so far this year MySpace has already announced plans to cut half its workforce.