Maybe in an upcoming version you'll be able to buy virtual currency to make the progress bar advance faster.

I think that the continual button pressing actually increases it's stickiness.

It's pretty much the absolute minimal behaviorist game, one button and a variable reward schedule.

Here's a bookmarklet for you:

  javascript:(function(){try{lvl=typeof(lvl)=='undefined'?document.cookie.split(' level=')[1].split(';')[0]:lvl;}catch(e){lvl=1;};setInterval(function(){lvl++;setLevel(lvl);document.cookie='level='+lvl;},1500);})();

You can always outsource the clicking...

Amazon Mechanical Turk here I come