I googled a question on Vim, followed a link to SuperUser, and got the "Welcome back, consider upvoting" message on a question that I had already upvoted.
Is it possible to disable this message for question that the particular user has upvoted?
If not, how about disabling the popup for SO/SE users that have a good voting history? (Maybe having received "Civic Duty" on multiple sites?)
In any case, I'm tagging this 'bug', because I was asked to do something that I could not possibly do, which is never the desired behavior.
Edit: For the record, I had also upvoted an answer to this question.