Quoted from Arcade:Aurich, here is a tip from someone who has been through this twice.
Ask people to put their Pinside screen name in the Paypal notes section.
You would be surprised how many people send payment with almost no way to tell who it is from.
Haha yup. I've done this before myself with The Shadow. Half the time I see nothing in the notes area, and then get a PM from a nice Pinsider sheepishly admitting they forgot a minute later.
I keep everything organized in Excel by Pinside name, makes it easy to track people and PM if there's a problem or anything.