I customized it a little by removing the piggybank image so it's just a plain bitcoinbox, and it looks great!
It updates very quickly when bitcoins are added to an address, but it seems to take a long time before showing that the balance has dropped when I send those coins elsewhere. The Wallet Balance app on Android seems to have the same behaviour, I wonder why?
Check out the bitcoinbox on my tiny little corner of the web at: http://thisfaithhasnoname.jottit.com
PS - Ha, ha, I was the first to post, I got the bonus coins!
Seriously, tho, thanks a lot, bitcoinbox.ru!
Update: I removed this from my site because it shows an incorrect balance, and the author hasn't responded to my PMs. Nor did I get the promised bonus. Oh, well.