This is one book I wished that I knew about earlier. It definately would have saved me a lot of time and trouble. It is pretty thorough and includes coverage on
- SEO Optimizations
- Pay-per-click Optimizations
- Web page, CSS, Ajax Optimizations
- Advance techniques like compression, caching and URL rewriting
- Performance metrics
References to papers published in technical conferences are also cited where applicable. So if you want to dig deeper into the details, you can do so. You can read more about the book
here.