Best Practices for Speeding Up Your Web Site
developer.yahoo.com
developer.yahoo.com
http://code.google.com/speed/page-speed/docs/rules_intro.htm...
There are also companies that can automate these best practices for you. Check out my company, http://torbit.com for example.
Still the best one out there I think.
It does PageSpeed + YSlow + other stuff. Saves me having to run both tools in my browser and it combines all the output into a nice interface with the ability to send my client a PDF to talk about small tweaks we could make.
I note that it puts a lot of weight on Css minification, which I don't like (I value the readability of HTML/CSS seen through curl) and doubt the value of with reasonably clean, lean source HTML. About half of the grade Fs on my sites come from this. The others need fixing.
I'm not saying be as sloppy as possible, but if you sweat the small stuff, not much will happen.
Btw, like someone just pointed out - YSlow (A tool that has all these rules) was just open sourced under the BSD license by Yahoo! - http://developer.yahoo.com/blogs/ydn/posts/2012/02/welcome-y...
(Btw, whatever happened to 2-Click Facebook buttons? They didnt catch on)
How rediculous. Use whichever is appropriate, as well as PUT and DELETE.