Here's an important point, that seems to be missed.
If you are in Google, and people get to your website via Google Search -- guess what? They ALREADY know your bounce rate! They don't need you to have installed Google analytics installed on your site to figure this out.
It's FAIRLY well known (I think) that Google is rumored use "time on site" as part of it's ranking algo.
So let's go back a step.
If Google is actually using "bounce rate" on your site to aid in ranking -- um, gosh! What a wonderful thing to know! You know WHAT TO FIX!
Let's summarize:
1. Google doesn't need to have analytics on your site to figure out a bounce rate,
if you are receiving traffic from Google.
2. If you have a high bounce rate -- well, fix it.
(Incidentallly,copywriter & conversion specialists can help with that!

)
Live JoyFully!
Judy Kettenhofen, Profit Strategist/Copywriter
NextDay Copy
PS David -- how would yahoo know whether you have ga installed? Oh, the same way it knows about other stuff on your site -- it crawls it.