List Building Secret #29 - Don't Buy Mass Email Lists

I was just reading a post on a well known marketing forum today and I read a post from one guy who said he had access to a list of 800,000 email addresses from people who were interested in making money.
He said his friend owned the list and was willing to let him use it for a mailing, but he said not to mention his name at all in the mailing.
This should have been the first alarm bell for this guy. Not to mention that this guy wasn't sure how the list was compiled or how the people subscribed to this list.
It wasn't even just one big mailing list, it was a bunch of lists stuck together.
If this guy does decide to mail to this list, he will be accused of spam, he will get into major trouble and he will NOT make any money worth the effort.
Never EVER send emails out to lists you don't know anything about EVER. Never buy bulk email lists.