I usually get backed up on writing trade posts. The blog world sends me such nice cards and the bubble mailer is always full of a wide variety. The team bags full of Dodgers, Ichiros, and Kinslers take more time to sort and comb through.
Getting an autograph through the mail is a different process. The cards arrive in a small plain white envelope that I self addressed. I usually send 2-3 cards. Sometimes a player may keep a card but that is not too often. I usually get all my cards back nice and signed.
A thin sharpie is going to be my preferred choice for baseball card autographs. I need to pick up a blue one for this coming baseball season. The free Dodger signings around LA will be starting up soon.
Thanks to Juan Samuel!