Nice!  I'm interested to know if you can manage to get all 6 running from one mobo.  If you can close off the case (with slots for the PCIe wiring) and arrange the extra PSUs a bit better (so everything is blowing hot air in the same direction), you could pretty easily get all air flowing from front to rear and make a little home made setup to vent all the hot air away.  Did you do anything special such that all those cards aren't drawing power from the PCIe bus?

Here are a couple pics of my rigs.  There are 3 4U machines in the rack (1 up high and 2 down below the printer).  I've taken the covers off the lower two to show a close up of those rigs.  The upper rig has a 6990 (about to have a second 6990) and the lower two machines are both dual 5970 rigs.

It's still under heavy development, but you might want to look into this:
http://copay.io

We (BitPay) like moving to "bits" …Jeff has written a blog post articulating how we intend to make the transition if we feel there is a consensus to go in this direction.

http://blog.bitpay.com/2014/05/02/bitpay-bitcoin-and-where-to-put-that-decimal-point.html

Bitcoin Panel is at 1pm tomorrow.

For non-nodejs people, you should now be able to install this as follows:
a) install nodejs (from nodejs.org)
b) run: $ npm install -g txtool

After that, you should be able run txtool from the shell:
$ txtool

This installs the nodejs txtool package with all dependencies in your global nodejs environment and then creates a symlink to the executable in your $PATH (usually /usr/local/bin).

No...I don't think they had power supplies in stock and gave me the option of taking delivery without the PSU (which I did).

It's not for sale.

Ok, I had to know...I disconnected all the computer components and plugged it into a kill-a-watt ...it's drawing about 280 watts.

I can't really tell because the noise of the computer I have it hooked up to is drowning it out.  It's being driven by an RPi, but I needed the computer for it's power supply...I also can't get an accurate power reading because of the power draw from the computer components also on the same power supply...when I have more time I'll get it on a standalone power supply.

Order date was the first day they started taking orders in late June last year.

Received my single today (in US) ...order #1653

My BFL Single arrived today...it is now mining successfully with bfgminer-3.1.0 (I had to upgrade from 3.0.2 to get it to work). It is getting close to 60 Gh/s. It is being powered via two PCIe power connectors from a typical computer power supply and it's being driven by a Raspberry Pi (which is also driving a jalapeño).

That isn't logic, it's normalcy bias.  Use bitcoins to buy things when you need to buy things, but for goodness sake don't trade it for an inferior form of money.  I fear that too many people new to bitcoin don't understand this simple concept and they're selling bitcoin out of fear that it might trade lower...or they want to lock in some gains.  Some people say that bitcoin can't go up in value forever...but in fact it can.  In fact, it's designed to go up in value forever over any sufficiently long timeframe so long as it's the best form of money in existence (which it is and will likely forever be).

+1000 I've never understood the logic in selling bitcoins.

Very cool...I always like listening to his interviews.

Whoa: http://www.zerohedge.com/news/2013-03-20/spain-bitcoin-run-has-started

Featured Story on Zero Hedge right now.

Such a classic!

It would be fun to see how many Bitcoin autos you could get lined up in one location.

There is a market for securing transactions.  Markets consist of both consumers (bitcoin users) and suppliers (miners).  Miners could have decided to go to 0.8, but it's not clear to me that 0.7 still wouldn't have won out in the long run.  The consumers could have decided to stay on 0.7 and any miners still mining on 0.7 would have still been providing a transaction security service to those users.  If that service was adequate (blocks continued to be found at a reasonable pace), it's quite easy to imagine that as the 0.7 chain continued on, miners that had previously switched to 0.8 would realize that they weren't servicing a large population of users...they could have then made the rational decision to switch back to 0.7.  The 0.7 chain would slowly regain momentum, overtaking 0.8 and ultimately providing transaction security to the entire community of 0.7 and 0.8 users.  Those miners that had continued on the 0.8 fork would lose all their mining revenues.

Conversely, consumers, seeking the most secure service and seeing the mining community transitioning to 0.8 might have made the rational decision to incur the work of upgrading to 0.8.

The decision that miners made was to serve the largest pool of consumers of their services.  Targeting the largest market of users with your mining capacity is probably the best policy (and would likely ensure that you, as a miner, are on the block chain most likely to survive).