Happens all the time.
I never liked the up/downvote system. Not just on the DP, but in general. I noticed it can often lead (not always, of course) to some bias, either way. A trend of downvotes can degenerate, just as trends of upvotes can, too.
If it were me only, I'd have either nothing or only an upvote system (no downvoting possibility).
Thus, a very disapproved post would just have its number of votes equal to zero, that'd show that really no-one agrees or appreciates (at all).
A "lame" post would have only a few votes.
At the other end, outstanding posts would have huge numbers of votes.
But again, I don't pay much attention to votes, rather, to the quality of comments instead (to my taste, anyway - always subjective).
Sorry for this digression. ;)
"Cyril" pronounced "see real". I code stuff.
"To study and not think is a waste. To think and not study is dangerous." -- Confucius