Usually if you use any words they don't like it warns you as you're setting up the ad. When I sold my Yamaha Billy Sheehan Attitude Limited bass it came up with some warning that using someone's name might imply an endorsement that doesn't legally exist. But in that case the Sheehan endorsement was legit so I left the ad unchanged.
They also, bizarrely, really hate it if you list DVDs as region 0 or all region - they think that suggests it's a bootleg :roll: . Even though lots of smaller distributors like Tartan, Anchor Bay and Blue Underground produce perfectly legitimate region-free discs. In those cases I just list the DVDs as region 1 or 2 because I'm afraid they will pull the ads.