Cookies and caching

How is the current caching policy WRT cookies?

Thinko: while certain cookies effectively render a
page uncacheable, others (bugs, trackers, etc.)
can be ignored for caching purposes, others obviously shouldn't.
which cookies should and which shouldn't should anyways be
left to a server's administrator to decide.
So the idea is to allow some kind of regexp-based cookie-related
ACL to be used with no_cache directives.

Thoughts?

-- 
	/kinkie