I did not comment on every thread. But I do answer some relevant questions on forums where my answer is likely to be appreciated and my signature is linked. Sometimes write short semi-article in the post (same thing with the signature). Also do product announcement once per forum. Sometimes they have rules against it but they also often let it slide. At some point was noticed by some reviewers and that had some positive outcome as well.

But as already said nothing really stellar in that particular product I mentioned