btc-e seems to be another big one. http://bitcoincharts.com/markets/ http://bitcoincharts.com/markets/ will show prices in the major exchanges, if it's online.

btc-e seems to be another big one. http://bitcoincharts.com/markets/ http://bitcoincharts.com/markets/ will show prices in the major exchanges, if it's online. I had to use the Google cache.