Starting out, a decent comment can earn more than a post - that was true when I arrived anyway.

Agreed on raising the comment quality bar being a possibility as folks 'fight' over what comments are getting that vote.

I notice SBI voting for folks comments when they haven't chucked out a post in a couple of days, and I may go do the same at times if i see votes on my posts without a comment or a fresh post on their part.