Is storing a session id in a cookie a better practice than a get var?

Question

The title pretty much says it all. A cookie seems to have a few advantages to me; however, I'll wait to see what others say.

Also - assuming a cookie is better, what can be done to make passing the session by GET variable better?

Specifically I'm thinking about PHP; however, this should apply generally.

Answer 1

Storing it in a cookie as opposed to in a GET var has at least one advantage, in that the session ID'd URL will never be bookmarked by any user.