Google Analytics Plugin

I've been running StatPress Reloaded and it has been VERY good to me. Unfortunately, they aren't updating it any more and I will have to look for some other plugin to use. I checked out WordUp but I didn't like it at all.

I don't really like google analytics but I thought I'd check it out anyway. I have a question though...

Will all of my users have to sign up to Google Analytics on their own if they want to use it, and will they have to add the code somewhere as well?