I think most people have head about Google Analytics by now. It doesn't seem to be producing any data yet (Google underestimated the demand a little), but just implementing it for some people is going to be a major undertaking.
Lots of people build their sites around php includes, but who thinks to have a PHP include at the end of their header for tracking?
Here are a couple of good solutions for those who want to do things quickly (i.e. those with lots of VRE)
Search and Replace - I have spent a lot of time looking for the best search and replace tool money can't buy (because it is free). Take a look at this great little application http://www.boolean.ca/replace/
Wordpress plugins - If you are running your blogs on Wordpress (I have loads of Wordpress blogs), then just like Blogger you can add something directly to your templates, or even easier just install a plugin. I am not going to name a particular plugin, best to do a little searching because it is early days as far as functionality, especially in regards to not including page views in the admin pages.
niche website , vre , google analytics , tracking , adwords , search and replace