The USD ticker was switched to bitstamp. The spread between Mt.gox and other exchanges is getting a bit ridiculous and I don't beleive it to be a fair representation of the current market price. The charts (
http://blockchain.info/charts/market-price) will still use Mt.gox for consistency.
Seems like it would be easy (relatively, given the data you already collect) to calculate a weighted average between all the exchanges you track, which would be a better one number representation of the exchange rate.
Submitted a
Blockchain Desktop App to the Mac App Store today. I'm not sure if anyone has tried to get approval for a bitcoin client into the mac app store yet but hopefully it might get approved. If not it will be distributed by direct download.
Awesome! It will be interesting to see if they approve it or not. Good luck!
