Haha yeah, people who care about prices probably have some trades in, so they probably want to know the ask/bid selection and watch out for 'walls'. They probably also want a decent chart, maybe some technical analysis tools.

The people that think speculating BTC is purely watching a number on screen are going to lose their money. Hell, people who stare at charts all day manage to lose money as well and we haven't even talked about the blatant market manipulation.

Charts I like to use: bitcoinwisdom.com, tradingview.com

For people that want to get into trading in Forex-like markets: babypips.com