Here's a list of the current outstanding trades I have on the Diamond Giveaway site. See if you can pick out the theme:
Yes, I have (unofficially) begun work on the birth year set. I've decided to collect as many 1975 cards as I can, then get them shipped at the end of the giveaway. Right now, I have one '75er in my collection (Earl Williams), but I hope to get more by trading up my '76 and '77 cards or even trading down '73s and '74s. We'll see.