Myspace also launches the mobile platform in mid-November, accessible from any mobile browser, as well as an iPhone and Android app to follow later in the year.

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The researchers looked at 20 social networks, including traditional networks with a mobile component Facebook, MySpace, Twitter and purely mobile networks like Foursquare, Gowalla, Loopt, and Brightkite.

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Founded by former MySpace exec Josh Brooks, the site lets mobile users snap pictures on their phones and turn them into physical postcards at 99 cents and up a pop.

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They might not be ready to do a MySpace face plant just yet, but it seems quite possible that better mobile-only apps will bleed away user engagement over time.

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While MySpace was successful in certain areas, things may have been different if they had integrated mobile components into their business strategy, an area where Facebook really excelled.

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