You know, philately is illegal in Pennsylvania...it's in the Blue Laws. (Otherwise Philadelphia would have had the first one of them, too.) Seriously, I've always been impressed with just how serious and focused those stamp folks can be. They put musicologists to shame! I had a friend in college, now a biologist, who wrote a paper for a philatelic journal that was all about errors in those little bar codes the post office prints on your envelope. Now that's dedication....

Aloha,
Mark