I downloaded the firefox extensions YSlow and I have a few questions about how to implement it's recommendations.
#1 GZip. How do I implement GZip into my website? The helps section (http://developer.yahoo.com/performance/rules.html#gzip) makes it look like I only have to add a few lines.
#2 YSlow says, "There are 2 static components that are not on CDN." I read the help section, but I still don't understand what CDNs are. Would an example of a cdn be, godaddy.com?
#3 YSlow says to add expire headers. "There are 2 static components without a far-future expiration date." Is this important and if so...how would I do this?
Thank you,
Andre