When we were code-reviewing it, we had a bunch of fun trying to hack it programmatically and sharing ridiculously high scores (things like 12,000 zerglings killed). It's not even as hard as you mention: you can simulate a mouseclick on all zergling divs programmatically, and instantly clear the screen of every wave.

Then I went and just entered the code to pop up a ShareBox programmatically on the JS console, letting me edit the share message to whatever I wanted it to be. "I took down 1,853,642.93 zerglings with 3.14 * 10^42 APM." And I didn't even need to play the game!