A simple Plugin to add Analytics code on your pages. You simply enter your ID, you choose if you are on a sub-domain and add your domain name.
Login to google analytics, go to the website profile which you want, edit and go to check status and there you see your google analytics code. You just want to copy your google analytics ID which will look like this UA-0000000-0 (but will be your own unique id.)
Yes, except for admin users. Option to choose who is being tracked will be added in the next version of the plugin.
It should work from 2.6 upwards.. Has been tested on all current versions and is working.