Thanks for that site: I had never heard of "Post-Tib Tendenitis" -- but it pretty well describes what I have been experiencing for over a year. I probably should have seen a podiatrist -- but a 'regular' physician described it as: "You probably partially tore something in there"...

And, as the article describes, I have found that wearing shoes (always) and ones with good arch support really helps.

But, amazingly, cycling has seemed to help it! It may be pure coincidence, but it didn't really start getting better until I started cycling...

Thanks!