At Reply, or “@reply”: A direct tweet sent to another Twitter user.
Hash Tag: The “#” sign. Allows Twitter users to group tweets by topic, making it easier to search particular conversations using Twitter Search.
ReTweet (RT @USERNAME): To repost something that’s already in the Twitter stream.
SnapTweet: A tweet that includes a photo taken with a phone.
Twittcrastination: Procrastination brought on by Twitter use.
Twadd: To add someone.
Twaigslist/Twebay: To sell something.
Tweeter/Twitterer/Twit: Someone who uses Twitter.
TwinkedIn: Inviting friends made on Twitter to connect on LinkedIn.
Twittectomy: To remove someone from the list of people you follow.
Twitterati: The A-list twitterers everyone follows.
Twitterfly: Twitter’s version of a social butterfly, marked by the extreme use of @ signs.