Joining multiple social networks usually means remembering a multitude of passwords, but MySpace is about to make logging on much easier for its 200 million users.

According to a TechCrunch report, MySpace will join the OpenID single sign-on framework sometime this week. OpenID is a free service that allows users to register an identity-specific URL and sign on to multiple websites with that URL, rather than a username and password. AOL, Yahoo and Flickr already support OpenID logins.

MySpace's expected announcement will bring the total number of OpenID accounts to over half a billion, according to TechCrunch.

While big internet players support OpenID, the initiative has encountered some problems. For starters, many of the larger companies are only "issuing parties," meaning they make their accounts OpenID compatible, but don't accept OpenID credentials issued by other websites. MySpace will continue this trend and will only be an issuing party at first.