I happened to have some Sportscreme so I applied that and wow, no more ache! The active ingredient is 10% Trolamine Salicylate. That sounds a lot like aspirin. I was curious as to whether that does anything so I did a web search and found this article in Sports Injury Bulletin. They sure do some interesting experiments, rubbing salicylate cream into knees of dogs. :)
I may still lose mail even if the USPS delivers it correctly. In today's mail, I found a rebate check wedged into a mail-order catalog. The rebate check was just a postcard so it would have been easy to miss, especially if I hadn't flipped through the catalog. (It's a mystery why I receive cigar catalogs.) That's just great. Another thing to worry about. There's no telling how much mail I've lost because it got stuck in junk mail that I threw out! Beware.