He used to, a lot - the IRS identified him as a PowerSeller and he opened up a second ebay account, but mailed a package with his exact same address to an acquaintance of mine, who tipped me off.
Here is my personal experience: I used to consider Dave Anderson a friend - I would call him every year after San Diego to provide a report and even rec'd an invite to view the books at his bank vault, so I flew across country to do so. I spent a lot of money with him, and still have the checks from the transactions.
But then I suddenly learned how he had been cheating me - and so many others - for many, many years by not disclosing restoration (this included restored Mile Highs bought on the cheap and then peddled for more multiples without any disclosure. For example, Mile High Green Lantern #1 anyone?).
Now we know how 'The Dentist' acquired the very best comic books in the world - on the backs of his many victims.
So he's a comic book villain?
He might make a great movie villain.
No it isn't "safe".