Thanks for playing. There is a leaderboard on the Facebook version, it's pretty tightly integrated with their SDK so we had to strip it out for this version :(
Ah, the difficulty really kicks off after day 3, getting (in my opinion!) really tough by the end of the first week. It's a tricky call to make, if anyone gets further into the game i'd be interested to hear how the difficulty felt there.
Yes, we've had "zooming" issues, sorry guys. It's the performance controller swapping in and out of high quality mode. We've made a tweak which should lock you in to the best version for your machine and stop this happening - we didn't realise we'd take such a performance hit from the flash ads and chat box on this page.