I am a newly admitted student to Thayer from China. I was looking for roommates on Dartlist and they turned out to be a big group of scam.
For most cases, they will send you a check with more money than they should and ask you to transfer the rest to another account, buy Walmart gift cards, or do the money gram.
The check you deposit in your account might be fraudulent and bounced back in a few days when the bank finished processing the transaction, but you have already transferred the money to the scam group. I reported it to the police but there was nothing they could do. The scam group is in Nigeria. After they got $2700 from me, they even pretended to be FBI to get more from my pocket.
Be careful! Do not make the same mistake!