Website performance is about two things: how fast the page loads, and how fast the code on it runs. Plenty of services will make your website load faster, from minimizers to CDNs, but making it run faster is up to you.
Seems that almost every story submitted to Slashdot last night in some way involved Google's Chrome that we started talking about yesterday. Dotan Cohen noted that according to Clicky Chrome has hit 3% browser share. Since Google has decided to release Chrome only for Windows, I now share for you 3 reviews written by others: the first comes from alexy2k, the second from mildsiete, and the third from oli4uk. They all seem to feature various opinions, charts, and screenshots demonstrating various exciting points.