In an age of REST, I'm not sure why sites still insist on hiding behind GET parameters for primary functions of the site.
I think one of the more successful aspects of Reddit is that each section has it's own full URL, making it easy to share and for engines to index.
Witness:
http://hubski.com/tag?id=askhubski
EDIT: (facepalm) Yeah, I meant GET parameters not requests ... both are obviously GET requests