Online dating disclaimer?

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A woman who was stabbed and beaten by a man she met through is suing the online dating site, alleging that it doesn't do enough screen out violent offenders and warn users of potential dangers. That's according to

Mary Kay Beckman of Las Vegas was matched with a man named Wade Ridley in September 2010. But, after just over a week, Beckman, a 50-year-old mother of two, had had enough of him.

He later broke into her home and attacked her. The man was later convicted for the attack - but died in prison. Beckman is now suing com for $10 million - saying the site should have a better disclaimer and further screen people who sign up. 

Should dating sites have a disclaimer to warn of potentially dangerous people?