This is a port to Google App Engine of an existing tool Google developers use all the time and internally called as Dory (after the fish who asked questions all the time in Finding Nemo). And, now it's open to the whole world.
So, just try out this fun tool to suggest your own questions and votes on other's questions too.
Matt Cutts says on it -
Well, Google is not the only company that does this, of course. Yahoo for example has their excellent Yahoo User Interface Library, Yahoo Pipes, or YSlow. Its just nice when companies release code or tools that benefit lots of people on the web.Let us do tech talks with Google Moderators.