Probably a good idea.

>Ah. I should keep this link then, just in case. Thanks.
>
>>Yeah, me. I used it to find a Yahoo and a corporate email address for a client. It hit on the Yahoo, but missed the corporate one. I'm curious about this, but not enough to drop $200 to find out.
>>
>>>Do you know anyone who tried using a service like this for a gmail, yahoo, hotmail, etc. account?
>>>
>>>>>OK, it's now up to $250 - thanks to JB and an anonymous soul.
>>>>>
>>>>>Once again, kgoff@commongroundsolutions.net, if you know the true actual identity of crankycoder55@yahoo.com
>>>>
>>>>Take the money and go here: http://emailrevealer.com/products.php?cat=1&PARTNER=admatch
>>>>
>>>>Very highly rated and you only pay if they find it.