I've never really understood the 5Nd  thing, but always loved the pool.  Alas, I had to quit mining back late Feb/early March for a couple of reasons; difficulty passing profitability being the main reason (electric rate increase too).   But there were other show stoppers; like the use of the building changed and noise pollution was unacceptable.

So when I quit I was contributing 54TH and had helped on the first ~150% of the most recently found bitcoin.    So I expected at least a little something in the payout but received nothing - Did my work really expire and my $~800 in electricity from mid-December - end Feb just fly away on the wind ?

Thanks for any explanation!

NCDiesel