Can you explain how you count nodes, I see in the third graph labeled Darkcoin Masternode  Count and Payment (http://drk.poolhash.org/mnode.html), that there was a drop in masternodes on october 2nd from 886 to 832 and that now it is back up to 839.  Actually i sold some of DRK because I assumed this graph was correct and it meant that a drop of 54 nodes would provide more lilquidity than what the market can handle.  Apparently this has not happened and the price has gone up but the number of masternodes has not gone back up above 886.

Am I right assuming that 54 nodes dropped out?  Is there a correct way to count active nodes and to monitor when nodes drop out?
Sorry for these questions but I need to know.