Before blindly shooting Dave, do some research on what his service is about and the way he operates.
It's legit.
When dealing with bitcoin, I have found the scam or the hack or the crash or the (negative adjective here) is the rule rather than the exception.
With the exception of the guy I bought a 1957 dime off of here from a year ago. I sent him coins, and he sent me a dime in the mail that was really neat.