We've rolled out another major update, this one focusing on support for mentions, whereby you can specifically reference a community member so that they can be notified about the post. This was one of our most voted-on suggestions in our development queue.
To use mentions, type an @ symbol and then begin typing the displayed name of the person you wish to reference. You'll see a dropdown menu of potential matches on the name. Select the proper person and a mention link will be auto-generated. Once you make the post, that person will receive a special notification about the post.
Note that @mentions are only supported in posts, not in subjects, and are not supported in chat room/event posts currently. Also note that users control whether they want to be notified about mentions in their notification preferences (the default is to be emailed about mentions, however).
Other New Features In This Release
Linkedin: we now support LinkedIn as a social network. The integration with LinkedIn as not as feature-rich as our other supported social networks, simply because of limitations in terms of what LinkedIn supports, but you can use this user logins and to link to LinkedIn profiles. You cannot pull in content from LInkedIn, however.