What will be really cool is to see how the "hide comment scores" effect looks using this (assuming at some point they will be able to collect that). I think the one liner type comments might show a big drop.
The switch happened in mid-May, 2011 (I don't remember the actual date). My scores went up slightly, but using this tool it's impossible to tell (since the limit is 100). I tried to change the limit in the HTML file using firebug, but I guess there's a server-side check for that (good!). Anyone care to hook against the API?