The subject says it all... I received a book that I did not request. Anything I need to do?

I  would notify the sender out of courtesy.  If they want it mailed back they need to buddy you a credit.  I would also check your transaction archive -make sure everything looks ok.

The likely thing that has happened is that someone sending you a book you DID request, mixed up their wrappers, and sent you a book meant for someone else.

You should not mark anything received yet. Go and PM the other member, and see if they can figure out what happened. Find the other member by looking on the "Books Enroute To Me" tab, and seeing if you can match up the return address with the state of a book enroute to you.

Typically, the way to resolve this would be for the sender to either send both you and the other member who will receive a wrong book each a credit, and you will simply send the correct books to each other.  Or, if the other receiver can't be contacted for some reason, then perhaps the sender will simply refund your credit.

Here is a link to the PBS doc about this situation:

http://www.paperbackswap.com/help/help_item.php?id=19