There are a lot of scams about that any new businesses (and, indeed, established ones) need to be aware of, and it's true to say that there is a lot of information about them on the Internet, but it's generally quite spread about - hopefully we can start to keep a track of the common ones that small freelance businesses need to be aware of here.
If you find yourself posting "Is this a scam?" to the list, it almost certainly is.