Google Web Accelerator
Do not download and/or install Google Web Accelerator BETA.
Problem is that your cookies become shared, around the internet, as each site you go to caches that page and sends it off to google’s servers. And for someone else using it, say at a forum, and you did as well at the same forum there is a chance they could see your information and all that fun stuff.
There are many articles out there explaining all of this more in depth then I have. Simply, don’t get this beta or final (if it ever makes it there).
It’s also not like this tool is much of a useful tool, in most cases it saves you a few seconds sometimes about a minute if you are loading multiple pages.