Buzz Faking

If you're trying to sell a product or a service, one way to do it is to create a buzz -- get people talking about it and, with some luck, trying it. Real buzz is great, but some sellers settle for creating their own, fake, buzz.

For example, they search help sites looking for problems their product can solve. Let's someone's selling SpamAnnihilatorGoldPlus 2.0. He could search for questions about stopping spam, then reply:

WebNewbie: I keeping getting spam in my inbox, does anybody know what I can do to stop it?

BuzzFaker: I had that same problem. My inbox was filling up with messages I didn't want. It was driving me crazy. This guy I know who's kind of a techie suggested a program called something like Spam Annihilate. He said it was the best and the price was pretty low considering how effective it is. I've been running it for a couple of months and I never get any spam in my inbox anymore. I found it by Googling the name.

That's pretty basic. More advanced Buzz Faking is entirely fake. The Faker posts his own fake questions, then follows it up with this own fake answer.

So how can you separate real help from Buzz Faking?