Excellent point but I think it may still be useful to see a list of profitable sites that don't charge. Perhaps some common patterns can be found and we'd all

Excellent point but I think it may still be useful to see a list of profitable sites that don't charge. Perhaps some common patterns can be found and we'd all learn from it. That said: I mostly agree with you and I think we'll take a look at the list and realize that they're all extremely lucky and/or happened to be at the right place at the right time.