at-scussion 

1. Carrying on a discussion between at least two people using the "@" symbol. Found in message postings, comment sections, and on Twitter.

2. Used to address a previous poster on a website to address their posting.

If urban dictionary had a comment section, people can carry on an at-scussion by doing this:

This definition is weak. ~Posted by user1

@user1 - Like you would know what a good definition is. ~Posted by user2

@user2 - Yes, I do know cuz I rock. ~Posted by user1

at-scussion by Aximill July 31, 2009