SeeTheStats is a great free service for exposing your Google Analytics data (the only way to do Analytics) to the public.

Here is some information about my site:

How many people visit my site?

What country are they from?

What pages are they looking at?

What browsers are they using?

What operating systems are they using?

How big are their screens?

My SeeTheStats page

You can also see all these stats over at SeeTheStats.com.