Here is example:
Right now there are two answers. Mine is ... well I hope it is decent. Answer provided by @TeckniX is ... strange (and link is at least puzzling). If I came across this situation I would most likely upvote my question and maybe even downvoted other one.
Now, I am not easy on downvotes and I would never downvoted without comment. So in this case 'my opponent' (and everyone else) would know who downvoted him/her and it would most likely look that I am doing this to promote my answer.
So I have dilemma: To downvote or not to downwote? ... or just sit and wait.
Disclaimer and request: Please don't upvote my question or downvote other one. I am just interested in opinions on this issue since this is not the first time I am facing this dilemma.