In the space of 5 mins, two of my answers from other questions have been upvoted and all because I asked a good question today. It's very flattering, I must admit, but are there safe guards in place to prevent someone upvoting too many questions for one person?
3 Answers
When a particular contribution made me curious of the author, I often look up what else the author contributed, and of course finding something valuable there makes me vote accordingly. Thus there is nothing wrong with upvoting questions or answers to items one gets to read only because one first read another question or answer of an author.
Of course, the upvotes should be deserved, but this can easily be judged by the upvoter within 5 minutes, so one need not be suspicious of two upvotes so close in time.
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$\begingroup$ In the case of professional physicists like yourself, it's very helpful to have a look at other peoples answers and questions and to vote on them if they've been ignored in the past. But I can imagine there's a few on my level that don't understand what they're reading and just upvote it because they like the person. $\endgroup$ Commented Apr 30, 2012 at 12:59
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$\begingroup$ Hi @Larry I think Arnold Neumaier is right and you should not worry too much about it ;-) $\endgroup$– DilatonCommented Apr 30, 2012 at 13:23
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$\begingroup$ @Nemo the only thing I'm worried about is ****wits like me getting a few good votes, allowing it to go to their head and then believing they're actually competent;) $\endgroup$ Commented Apr 30, 2012 at 13:39
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$\begingroup$ Nah, there might be such persons around of course ... (I dont know) but you are obviously not among them :-). I know some members whose answers I often like to read myself and of course I upvote if I understand and like it what they say. And people often point it out if they see wrong things in upvoted answers. $\endgroup$– DilatonCommented Apr 30, 2012 at 13:49
There is a script that attempts to identify vote fraud (both for and against you) and will reverse any that it detects. If your fan has over-done it or has acted too quickly (i.e. without reading the answers) these votes may be removed when the script runs later today.
The details of what constitutes "fraud" from the scripts point of view are not public information, but the hints I've gotten from the team suggest that they are not as simple as "counting".
See also: Attack on my account.
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$\begingroup$ They've got to be multiple (2+ it seems) votes from the same person, within a very brief period of time. It's usually pretty obvious, like 10 downvotes within one minute, when it's clearly fraud. $\endgroup$– ZeldaCommented Apr 29, 2012 at 20:16
See What is serial voting and how does it affect me?.
Serial upvoting is handled automatically and you don't need to get a moderator/Meta involved. In this case it's just two votes though, so I doubt it would be detected as fraud (it's usually many votes when fraud occurs, but there cut off isn't publicly known).
Basically, don't worry about it. In this case it's doubtful they had any ill or improper intent.