Awesome. I built Intab (https://chrome.google.com/webstore/detail/intab-beta/bfaekma...) but it's admittedly a bit hacky. Hoping this API will support the same use case in a much more stable way.

Wow, switching to mouseover instead of click is an amazing idea. Going to play around with it and ship an update soon.

Spacebar scrolls the page by default so might run into some conflicts there.

Site down :(

Here's a mirror: https://dl.dropbox.com/u/1483019/intab/index.html

Here's a Youtube video that shows it in action: http://www.youtube.com/watch?v=8ugcbwmDzMc

Glad it works on Windows. I don't have a Windows machine to test it out.