I've moved all my comments to Facebook for 3 reasons:
- To add credibility and quality to the comments: People can say they're anyone they want on regular blog posts, now if they want to lie they need to create an account to do it.
- To reduce SPAM: I was getting more SPAM comments than real ones and was paying for system to block them. Now Facebook does it for me.
- It allows me to produce more content: By having comments on Facebook, other people will see them and check out my training. The more people that do that - the more time I can spend creating new content. I can't answer 20K subscribers individual questions - but if they are all in one place I can find the most common ones and answer them.