Also, there is the catalog of sites with proxy troubles, and not JUST the clowns that block the proxy instead of a troublemaker's own IP ( 100% available through the transparent proxy ).
Yep!
www.betanews.com is still unusable through default proxy (poplar)
62.255.64.11 seems to be the culprit - all the others work as explicit proxy
Maybe it's a block at their end!