Forums / Cotonti / Core Labs / MVC in comments

I have been playing with sprites for a few days now, there are a few good articles about it.
BUT, you are right, you have to know how those Sprites work.
Still it improves performance.

Here are some documents (for the interested)

Articles:
http://www.alistapart.com/articles/sprites/
http://www.websiteoptimization.com/speed/tweak/css-sprites/

General website optimizing:
http://developer.yahoo.com/performance/rules.html