I think most are aware of a G update that rolled out the first week of this month. It turns out that this may have been a significant update where the effects are just now being felt. In a number of forums there are widespread reports of falling traffic. I don't pay close attention to my ms GA account but just had a deep dive and am now concerned that I have been affected as well. My traffic is off 30%. My traffic consists of pbn which has held steady, and web 2.0 which i use to hide my pbn. the web 2.0 traffic is usually not a big thing, some deliver and some don't. I use them for link juice too. It looks like this traffic dropped off quite a bit from the accounts that had live traffic. Behind the 2.0's I use SER.
So, this would not be a huge concern if my rankings held.
Checked the serp rankings, and sure enough more than a few of my kw's have been hit and dropped off quite a bit.
So, putting the pieces together, either the 2.0's went tits-up on me (using sere to create and post) or the SER layer exposed them somehow. I am pretty conservative with SER and keep high quality there.
The bigger picture, G seems to be more able to detect these types of networks. This will require the next phase of thought process to stay ahead of the curve. Remember info-graphics and how easy it was to rank with them? Would anyone ever use them to a MS these days? Nope. Things change, and we have to stay ahead of the change.
Would love to hear of anyone elses experience this week and if you have determined what the trigger could be. I'll report back with any other findings.