I know a few of my correspondents do swaps via Swap-Bot. I was kind of intrigued to learn that you can do a postcard swap or a letter swap, which basically just entails writing and sending someone a postcard or a letter! So isn't that kind of like a pen pal exchange? Seems like it to me.
Anyway, I'm curious - who out there does Swap-Bot? Do you really enjoy it? I just signed up for a couple of postcard swaps - what should I watch out for?