Jeff Garzik, a Bitcoin core developer, writes about Bitcoin mining hardware, blockchain data, and autonomous software agents.
HN commenters link it for his Avalon ASIC miner reviews, which drew skepticism about the claimed earnings, and for his StorJ and blockchain data spam posts.
In practice Avalon draws 620 Watts and runs at 66 GH/s [1].
And let me introduce a few points to consider for an inspired by your calculation soon-to-be miner :)
1. BFL [2] and whoever else is able to produce an ASIC system start shipping very soon. All this hash power will skyrocket the difficulty, eventually decreasing the profits to today's GPU levels.
2. Volatility of BTC varies greatly and can be anything in a few months term. As I recall, the first gold rush happened in 2011, when GPU miners appeared. BTC peaked at over $30 in June and was less than $5 by November.
3. If you order your system now, you will likely get it in May if not later. Pre-orders started last summer and they're still waiting.
Happy mining :)
[1] http://garzikrants.blogspot.com.es/2013/02/avalon-miner-power-usage.html
[2] http://www.butterflylabs.com/
I'm always fascinated by StorJ.
http://garzikrants.blogspot.com/2013/01/storj-and-bitcoin-autonomous-agents.html
TLDR; a SaaS system that not only auto-scales, but does so autonomously. When it has excess funds, it buys more VMs and provisions them with itself. If cashflow is low, it shuts some down. Add in the ability to create accounts (using bitcoin as currency) and you could very quickly lose the paper trail and have a SaaS owned by the Æther.
I prefer the term skeptic, and I think it's quite reasonable to be skeptical of a $1300 device capable of generating $210/day with still no proof. I think the skeptics will be much calmer once he plugs it in and verifies that it does what it says it does.
EDIT: Now confirmed on Jeff's blog: http://garzikrants.blogspot.com/2013/01/avalon-its-alive.html
Picture of the inside: http://garzikrants.blogspot.com/2013/01/avalon-modular-room-to-expand.html?m=1
I hope this will put a stop to most of the non-believers constantly trolling on bitcointalk.org
There is all sort of graffiti and other garbage embedded in the blockchain.
http://garzikrants.blogspot.com/2013/04/on-bitcoin-data-spam-and-evil-data.html