Let's say there's an issue for which there are a few duplicate questions, but there's no canonical answer. So I spend some time writing an answer of which I'm proud. No, really proud.
But now it will probably languish with a few page views. I could self-promote it by leaving some comments on the duplicate questions.
Is there a way for me to promote it? Maybe spend some of my rep, in the same way that I can offer bounties? I'd like it to get a few upvotes so that I could link to it (then maybe print it, stick it up in my bathroom, send a copy to my grandmother). As it is, it will probably languish with 0 upvotes, because the question won't get enough eyeballs.
I appreciate there are lots of questions on here asking how to deal with canonical answers, but I can't see any guide for the average user to (legally) get their answer upvoted enough that it looks canonical.