The blogosphere pulse speaks about blogs

Having fun deep in the night with a pulse, I came across one very funny schedule:



It is very clearly visible decline in early November. When I saw this chart, my eyes were round. I can not imagine what could cause such a sharp decrease in the mention of blogs in the blogosphere. Perhaps a new word has appeared that means a blog or magazine about which I still do not know. Perhaps this is due to the machinations of the SUP, maybe it's Putin's Plan in action. I dont know.
If you look at the chart for the last six years , the picture will become even more scary and incomprehensible. If I correctly understand what I see, such graphs can be observed if a bubble bursts. In this case, it seems, we have a crisis of the blogosphere, and we have missed it. At least I personally missed him.
')
There are opinions that this is due to various flood-mobs, lists from the series “I live in 2007, if ...” which included the word “blog”. Although I myself have not seen such lists, it is likely that this is an adequate version. Also, some believe that this behavior of the schedule is directly dependent on the session. But this is hard for me to believe - the decline is twice as cool, IMHO, for this version.