stinking craigslist
I suspect that this is to either;
discourage auto dealerships from abusing the service,
force sellers to have some skin in the game and write comprehensible ads (to write less like @jpar:poke: and more like
@AJ/FormS)
Punish Mopar drivers who buy Ford snowplows
I remember when you didn't get that Plymouth Trailduster. I REMEMBER MAN!