Blocking them before they get to you isn’t easy.
Why would I use Multisite vs Single Sites when I have 100 sites?
The other side of speed is understanding what your server can cache for you. Sandra Bullock not included.
The art of caching and catching content. Understanding what makes up static content is the first step to speed.
I finally set up nginx as a proxy for my apache box. This is not true nginx, and I can’t run SPDY on it yet, or even SSL, but it sure does speed stuff up!