Kado-Kado is this online flash game repository of addicting arcade-style flash games made my Motion Twin. Most of the games are pretty fun and a good way to kill time, I linked it if you wanna try it out and haven't gotten an account yet.

So far this extension just augments the VIP stats page to show your current level at each game listed, making it easier to find the information. You only get the stats page after you purchase some orange gems. :S
This is semi-preliminary as I'd like to have it show whether you're going to level up or not this period too.

Don't know if there's any other Kado-Kado players on here but if there are, hope it helps. :]
If not you can always use this as an example of the XMLHttpRequest object.