"Blog comment sections" refers to a section on a blog where readers can provide their thoughts, opinions, and feedback on a specific blog post. Full definition
There is no way I can try to provide any marital counseling in blog comment sections, so won't even try. (redeeminggod.com)
This is a great piece, very thoughtful, unfortunately followed by the types of replies that make me avoid blog comment sections in general. (phdinparenting.com)
More appropriately called stream of consciousness, and spread around a few other blogs comment sections as well (realclimate.org)