NEW POOL RULE: No more >500% Blocks!
In all seriousness, though, if we hit several in a row, we would be technically paid multiple times for the same shares, right?
I guess it all evens out in the end... like everything else, I suppose.
Yep - hitting multiple in a row is great when it happens.
Over a long enough period, it will even out. The variance from block to block is high, but over a large sample, it's good. The trick is to be able to increase your hash rate strategically and use cash flow and profit to do that and float costs in bad months.
The good news here is that everyone got a chance to see exactly how much they get paid for only a single block, which lets us know how good we have it all the other times.
"The sweet is never as sweet without the sour." 
MINE ON WITH KANO!
That's the point of the 5Nd also - so that it's uncommon to have unpaid shifts.
In this case all shifts from 5Nd to the previous block (500% to 596%) got no reward.
It's also a trade off of how long it takes to ramp up, when the pool hash rate is low (50 PH)
From the CDF table:
0.99326205300091 500.000% 1 in 148.4
i.e. we expect to average, over a large number of blocks, 1 in 148.4 blocks being over 500%
When you are ramped up, it makes no real difference, it's more like aesthetics than anything else -
ouch you see unpaid shifts - but your reward per block is still 'the same'
https://bitcointalk.org/index.php?topic=789369.msg29985768#msg29985768Luck can be both good and bad - it's random.
The one catch with it is that I can't just go and change the 5Nd
If I make it lower, that negatively affects the current miners and is to the advantage of any new miners.
If I make it higher, the opposite.
You mention that its uncommon to have unpaid shifts but looking at my shift reward, it says 0.08655 and going into my payments after the block matured, i received 10% of what was rewarded at 0.0085898. I am also not even sure if that was the shift that was paid. In my payments, that amount appeared before the block matured but payment was only sent out after the block matured however the reward information tells me that I only had about 40% my actual hashing. Someone please tell what to do. I have been thwarted.