said 1 year, 4 months ago:
@glengorham It really depends on your goal, Glen.
I would say generally that having comments on your blog are “worth more” as it takes a lot for someone to leave a comment on a blog post (ad they tend to be more to them). Whereas it is easier for someone to comment on Facebook for example as they are primed to do so (as that is the nature of Facebook).
But do not dismiss comments left on Facebook and/or Twitter (or other social networks) as these are still interactions and can lead to some worthwhile engagement on these platforms.
Afterall, someone may leave a comment on your blog and never come back again, but if they comment on Facebook you still have them (assuming they have Liked your page), and you can reach out to them a lot easier in the future.
Also, you can easily turn the comments and discussions you have on Facebook/Twitter into further blog post, and try and illicit more comments on your blog.
Hope that gives you some food for thought.