I can't believe this gem isn't more popular than it is! A good reliable Related Posts plugin is hard to find (one that won't crash your server or hang up the processor, and still returns correctly related posts...).
Where did they go from here? works like a CHAMP! It adds a column to your WP Admin Posts page so you can see which pages people are viewing after each post.
One thing I'm left wondering is - does it sort the results displayed, by order of Most to Least? In other words - can you rely upon the top "Where go" result being the page that the most viewers visited after reading the page you're on? I can't seem to determine this.