http://www.welldesignedurls.org is brand new, but I hope to use it to spread awareness of the importance of URLs in the design of web applications, and more importantly, provide a resource for those who want to improve their URL design.
BTW, your WordPress does a great job with URLs! Much better than my Typepad (I’m going to have to consider switching.)
With WordPress, there is actually a screen where you design how you want your permalinks structured. So you have flexibility in how you do it. It automatically adds to your .htaccess file to get the URLs to work the way you want them too.
Wow, I followed those links you gave, and then followed some they gave, and WordPress is MUCH BETTER than TypePad with respect to allowing configuration of clean URLs! This is really starting to make me wish I’d picked WordPress instead of TypePad when I randomly chose the latter. I’m seriously going to consider switching, however.