One way to increase engagement with blog readers is to remove barriers, like CAPTCHAS (hopefully you don’t have these), logging in to leave comments (Facebook, Twitter and recently Google have solved this problem) and actually having to use one’s brain by leaving a comment.
Create simple polls with Quipol
Another way to engage readers is to use a simple polling app like Quipol.
Each Quipol displays one question with thumbs-up and thumbs-down options.
Test it out for yourself: