Any chance to get HTTP(S) POST notifications?
UPD: What about connecting by TCP to bitcoincentral live feed at bitcoincharts.com:27007 and getting all exchanges supported at once and in real time?
What do you mean by POST notifications? Also yes I do plan on using the bitcoincharts feed later on and allowing the user to pick their exchange/currency. Right now, though, they ask that you restrict updates to once every 15min so I'm considering using the individual exchanges' APIs instead.