Facebook has upgraded their commenting service in order to remain competitive against rivals like Disqus as well as IntenseDebate.

While the improved anti-spam features should help bloggers combat spam, their new “social signal” feature may also help your readers from viewing comments from annoying trolls as well.

By only allowing new comers comments to be visible to their circle of friends, Facebook is helping to reduce having a discussion disrupted by a random troll, without alerting them that their comment was censored.

Blogger’s powering their comment section via Facebook can also blacklist words as well as users who are proving to be a nuisance upon multiple posts (i.e. those who spell in ALL CAPS or consistently go off topic). Read more at www.blogherald.com