Yes it is a cool strategy. When you comment and do upvote user's post. It works for many people but no everyone I must say. Another thing is that when you give yourself time to comment and do little upvote without the author noticing your contribution is another great challenge.

Everyone is careful with their voting power not to go less than expected. I notice something, the strategy of upvoting and commenting will works well when a platform is new but now that it has grown to something big where as a post can get over 100+ comment, that will be a difficult work for the author to notice everyone.

I love the conversation, am learning something different. Will be expecting your feedback about it.