Mentions are a great way of starting a conversation. In the past, if someone commented on your project with a direct question or suggestion, it was difficult to respond. Now, project owners can direct answers or other comments to users who have taken time to leave feedback. Also, you can "tag" a comment with a friend or colleague's username to draw attention to a project or discussion. A Mention is a way to respond to or call attention to someone directly in a comment. Mentions are also a great way to respond to a comment someone else made on a project or to join a conversation.
To mention someone in a comment, type @ then begin letters of their name. For example, if you wanted to mention John Doe, write @John Doe. You do not need to be following someone to @ mention them.
A list of people will appear and you can select the correct person you want to mention.
This list will display people who:
1.) are in the thread of comments you're on, including the project owner (as shown below)
2.) people you follow/in inner circle
3.) then, everyone else.
When someone mentions you in a comment, you’ll see a notification on Behance and via email (if you have email notifications turned on) that says who mentioned you and links to the project.
To change your notification settings for mentions, visit Account Settings (http://www.behance.net/account/notifications) while logged into Behance.