Steem Comment Titans Contest Episode 3.

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It is already a week and few days that I started this fun but educative contest called Steem Comment Titans contest, read more.
Last week, I had several comments from @visabella @vheobong and @peachyladiva
And I had an amazing comment from @peachyladiva and she will be rewarded accordingly to the liquid payout (50% of the SBD) from that post - supra. I guess I will be expecting thousands of comments this week, let's make someone rich AF again.

Well, the whole essence of this contest/challenge is to create an atmosphere where we can exchange thoughts on a particular topic and perhaps reach a consensus (although, I doubt if we can reach a consensus). But I guess it is fun intended.
So, here is the contest/challenge tag - Steem Comment Titans

How can you play?

I will drop a question here (it could be general or restricted to a field, depending on how I feel) and all you got to do is, be that tough guy/lady with top notch keyboard skills that you're and give me a brilliant comment (in form of answer) and you're on your way to win some cash.

The best comment will be rewarded with the liquid from this post payout each week. That means, best comment each week wins something. Definitely, it can be you!
So what are you waiting for? Get on board

Here is the question Titans;

What do you understand by DPOS?
Leave your reply as short and brief as possible!