First of all, I would like to talk about self voting. I acknowledge that I am one of them who votes for their own content or comments. Although I am trying to minimize my self voting and encouraging good contents by my limited voting power. But why this is happening, I mean self voting? People are investing something and getting no reward after writting some good articles. I have so many good friends who started with enthusiasm and wrote some good contents. But after some period, without getting any reward or appreciation they ended up with leaving steemit. I think this lacking lead to self voting. The community need to thing this seriously. However, very good, informative and enriched article. Thanks a lot for your contribution and help to learn something from your content.