I seem to recall that at times they were fairly strongly implicated in effecting and/or enabling domain name "snatching" against users' name searches. (If you don't immediately buy the name you searched, they or someone else will make a provisional claim and then try to flip it to you at a profit. The provisional claim can be backed out of within some number of days if you don't bite in the meantime, for little or no expense to the party doing so.)

If that's true (it's been a while and my memory is faded), that would definitely be scummy behaviour.