I think it's a good idea. Even if the results of your poll don't prove to be all positive, it doesn't hurt, right?

To be honest, I saw them below posts I've read, but didn't focus too much attention on them. I think if I was actually searching out an answer, and if the algorithm provided similar links, I would use them. More often, I am just joining in conversations I find interesting or that I have something to say. Again, they will be most helpful to people looking for info on specific topics.