Some time back I had considered moving to Wordpress.com. I had thought about doing so I could see statistics and such for the blog. Then I found that I could do it with Google Analytics.
Using Blogger, this is simply done by choosing to 'customize' your template. You click on the 'edit html' link and scroll down to the bottom. Just before the last </body> tag you paste in the snippet. You're done, every page in your blog is merged with this template and will get tracked automatically.
Watch out though! This is where I ran into trouble...
If you switch templates at all you have to paste that code back in there, or you'll lose all tracking for 2 weeks like I did :(