Has anyone noticed any tactical downvoting of their, or other people, answers? For example, in a recent answer to a question, my answer described a possible solution. Shortly afterwards, another answer appeared following the solution I had mentioned.
I know that this is completely in the spirit of the site, however my answer had been down voted even though it was still as valid as it ever was. Another poster also had his equally valid solution down voted.
There is no way of knowing the reason behind the down voting, as no comments were left, but I am suspicious as to the ethics behind down voting someone else's valid answer in the hope of making their own answer more prominent. Are people really that desperate to gain reputation?
I have seen comments in other posts that suggest that tactical downvoting has occurred.
So, does anyone think that it is acceptable to downvote another post, even though it is still correct but may not provide a complete answer, to make their own appear more favourably?