Well, I'm in full agreement that replying to comments on your own post is a must, other than those you noted. I'd also say, at least in my case, that commenting as much as I can on other people's posts is important, too. I haven't been here a long time yet, so I'm still building an audience and so I'm going out to them since it's not likely they're seeing me.

So far, it's been yielding satisfactory results, so the plan is to keep doing it.