@Arnie89
Airbnb charges the guest for the first month only. After that, if the guest doesn't pay Airbnb then you will not get your rent. Also, Airbnb doesn't collect the actual security deposits. So the best would be to talk with your potential guest to find out why is he coming to town, where does he work etc... and then maybe, allow him to book for a week or two through Airbnb so you have a chance to get to know each other. Then, if he is a good match for your place and your place suits his needs, you should sign a contract and collect a security deposit like with any other tenant outside of Airbnb.