Original post in April 2016
For the past several weeks/months, I notice that someone has/have regularly downvoted:
my most recent posts
my old posts which were most recently upvoted by others.
The quality of the downvoted posts varies, and I think the motivation of the behaviour is personal.
I have been living with it. But is it normal?
Updates in Oct 2016
A new pattern about the behavior is that around the time of 23:30 once in a few days, the downvoter fumbled in my account for some posts which got upvoted recently to downvote. See my screenshots below.
The behavior happened much less frequently recently than it did when I posted this in April, probably because I have been less active on the main site. But it is personal targeting, persistent and without good reasons. If I begin active again, I believe that behavior will also happen much more frequently, see my reputation records in April, March, February, and January.
If possible, can the downvoter be identified and discouraged from continuing the behavior?