@Omniescient: only if we expect improvement of hardware (lower costs and or power used) to be static or decline relative to the difficulty. e.g if in theory someone creates a bitcoin miner with 0 costs (capital and power), then the "fundamental" cost of obtaining bitcoins is 0

@railzand: the list is a compilation of "current-gen" hardware, even if some are not shipping yet. This best reflects the opportunity cost of buying/pre-ordering hardware v.s. buying from an exchange

Added Yeah the AntMiner S3 seems to be quite profitable if you manage to get your hands on it.

At some stage if there is enough interest I'll probably add user input so you can specify your own hardware.
Also working on modelling the "improvement to hardware over time" so I can create a rate forecast report.

Had this idea for a while now, so I decided to hack this up over the weekend.
The hypothesis is that buying hardware achieves the same as buying BTC over an exchange.
The idea is that by using this fact I can judge BTC's fundamental value as a long term investor.

http://btcdifficulty.com/

Hey guys,

I just made a simple stop-loss order system (monitors price and executes a market order at the trigger price) to judge the demand for an advanced order system that works across multiple exchanges.

http://stoploss.pw/

Only has Mt.Gox support for now but Bitstamp support is coming soon
Planning to add complex rules (based on vol, EMA, etc), trailing stop-orders, trigger orders.
Please leave any feedback

Cheers

Made a simple stop-loss order system (monitors price and executes a market order at the trigger price)

http://stoploss.pw/

Only has Mt.Gox support but Bitstamp support is coming soon