Hash tag
A hash tag or hashtag is a way of organizing your updates for Twitter search engines. Users prefix a message with a community-driven hash tag to enable others to discover relevant posts. One commonly used hash tag on Twitter is #followfriday where users network by providing the names of their favorite people to follow on Twitter.
username
A name people use within Twitter, limited to 20 characters.
Retweet or RT
Abbreviated as RT, retweet is used on Twitter to show you are tweeting something that was posted by another user. The format is RT @username where username is the Twitter name of the person you are retweeting.
Tweet
Describes a Twitter update. A tweet is basically whatever you type into the Web box to answer that question, using 140 characters or less. People tweet personal messages, random thoughts, post links, or anything else that fits in the character requirements.
profile
Information about you within the system. Could contain your real name, email, location, interests, website, business name or other qualifications.
FollowFriday (FF, or #followfriday)
On Twitter, FollowFriday is a recommendation. It is used to call attention to a user's favorite followers and favorite people on Twitter. When you tweet a FF message, you are recommending that your followers also check out the people you mention in your post. When you send a FollowFriday message, you include #followfriday in your update so it can can be searched for using that hash tag.
Follower / following
On Twitter, blogs, and other social media sites, a follower is someone who subscribes to receives your updates. On the Twitter Web site "following" someone means you will see their messages in your own personal timeline. Twitter lets you see all the people you follow and also who is following you.
drive thru tweet
Refers to a tweet sent by an individual while he or she is at a restaurant drive-thru.
TrashTweeter
Refers to a twitterer who talks trash in his or her posts.
Twitterapps
Short for Twitter applications. It is the phrase used to describe any application that integrates with the twitter service. May also be called Twitter tools or Twitter add-ons.
direct message (DM)
Short for direct message, it is the function of the Twitter service that enables you to send a private message (direct message) to a person you are following.
Dweet
Slang term used to describe a tweet that has been sent by a user who is drunk.
mistweet
Slang term used to describe a tweet that you later regret having sent.
detweet
Slang term used to describe a tweet you made, then deleted.
tweetorial
Slang term used to describe tutoring or lecturing on or about Twitter. Some industry speakers use the term to describe a live event where a lecture on a Twitter topic is given (e.g., a seminar or event that teaches people how to use Twitter), while others use the term to describe giving a lecture on Twitter. Here the host speaker will use a special designated hash tag so others can follow the lecture on Twitter.
tweeterboxes
Slang term used to refer to Twitter users who "tweet excessively."
@reply
The @reply means a Twitter update (a tweet) that is directed to another user in reply to their update. An @reply will be saved in the user's "Replies" tab. Replies are sent either by clicking the 'reply' icon next to an update or typing @ username message (e.g., @user I saw that movie too).
drunktwittering
The act of posting on Twitter while intoxicated.
Trending
The list of 'trending' topics is published to the sidebar on the Twitter website. These topics represent the most popular #hashtags or @users at any given moment in the Twittersphere.
tweetaholic
The term used to describe someone who has a problematic addiction to Twitter.
Celebrity syndrome
This Twitter phrase refers to a situation in which a non-celebrity mistakenly believes he or she is a celebrity. Users with celebrity syndrome will not follow a significant number of Twitter users.
Reply
To 'answer' someone's Tweet that mentions you. It is in a sense a direct message, but is only private if people are not following the people mentioned in the Tweet. A reply contains your username and the person you are replying to.
Timeline/Stream
Updated every few seconds, this is the list of Tweets from your followers.
Follow
When you follow someone, you add them to your 'reading list' or Twitter feed.
