Safari's Web Inspector

I was just trying out the script debugging in Safari version 4 developer preview tonight and got more than I bargained for. I was trying to find out if I had a script error in my tags for Google’s new AdManager on the Amateur Traveler discussion boards pages (http://AmateurTraveler.com/board). I turned on the web inspector by using the “Show Web Inspector” menu in the Developer Menu. Instead of getting just script errors on my page the web inspector showed me errors in my HTML as well in a very clear and helpful way. In the example below I was missing tags in my HTML and the inspector tells me where it is assuming I meant to have these tags. This is very helpful.