It seems like this was written by a reporter, or perhaps a review writer who simply doesn't know what they are talking about. It's only got half the facts and it's trying to sell you a product.
The comments about the registry causing you issues is so pathetic and lacking that I earnestly hope no one has believed it. If you want to get technical, yes registry issues do cause performance issues, but that's simply because it's an incredibly broad description. removing old keys won't get you anything more than a marginal performance boost. As well, I can guarantee their program isn't sophisticated enough to repair a corrupted registry. A basic understanding of the registry would make this obvious.
As well, it should be noted that virus and spyware have no need to steal your email address or use it from your computer. Your email address can be easily spoofed without any access to your account.