A thorough run down of of some great ways to quicken your site. Most are for heavy-traffic sites, not really blogs, but if your site is 1-heavily trafficked or 2-subject to heavy traffic at times, more advance optimization may be in order.
While some of this is common sense (reduce number of HTTP requests, make JS and CSS external, avoid redirects, etc.), some are a bit more advanced and will require time/monetary investment (CDN, assets hosted on diff domains, image sprites, etc.). If this is your cup of tea, that’s cool. If not, promise not to geek out on you too often. (via)