Seems that PayPal is doing a major sweep, limiting accounts that are not verified or have minimal information tacked aboard. Time to start looking at options and what not.
I doubt that it's just because of scammers. When you have a high volume, they immediately flag the account, it's an automatic thing. I guess the point of the thread is to be sure that you have your business information updated. Also, I believe they randomly will do a system wide sweep, to encourage sellers to get on the ball with their information.