Ok, so I've been looking at the profitability of Middlecoin going back to last year.  In a nutshell, my math says back in September and October, at  least for the stretches of time that I could actually fine numbers, folks would have been netting out around $2.35/Mhash/day USD using the Coinbase price at the time.

Starting in December, after the price of Bitcoin went through the roof, that number jumped to $13/Mhash/day.

For the past three days, it's been $11 to $16.  

At $2.35/day using 450 watts at $0.10/kwh, a person would have spent $30/mo on electricity and taken in $70 from mining, for a profit of $40/mo.  If hardware cost was $700 (which is lowish for 1Mhash), you'd have been looking at 18 months to break even.

So... what was the draw way back when this pool started up?  At $10+/Mh/day, it's a no-brainer.  But that seems to be very recent.  I feel like I'm missing something somewhere...