Can you add the option to have other alert thresholds? E.g. Right now, I can set it to alert me if BTC goes over X, or below Y, or is equal to Z. I'd like to be able to have an alert for all of those conditions, rather than having to pick just one (so I'm alerted if it spikes and if it crashes).

Thanks, signed up and getting alerts.

Awesome tool, how difficult would it be to add other sites/currencies? E.g. btc-x, Litecoins?