• @ - The @ sign is used to call out usernames in Tweets: "Hello @twitter!" People use your @username to mention you in Tweets, send you a message, or link to your profile.
• GROUPS - Facebook Groups make it easy to connect with specific sets of people, such as co-workers. They’re dedicated spaces where you can share updates, photos, and documents as well as message other Group members.
• @username - A username is how you're identified on Twitter. It is always preceded immediately by @ symbol. For example, uou is @uou.
• Bio - Your short personal description (up to 160 characters) that appears in your profile that serves to characterize your persona on Twitter.
• Hashtag (#) - A hashtag is any word or phrase immediately preceded by the # symbol. When you click on a hashtag, you get to see other Tweets containing the same keywords or topics.
• Retweet (RT) - A tweet that you forward to your followers; often used to pass along news or other valuable discoveries on twitter. Retweets always retain original attribution.
• Timeline - A timeline is a real-time stream of tweets. Your Home stream, for instance, is where you see all the tweets shared by your friends and other people you follow.
• Tweet - A tweet is a message posted on Twitter that is up to 140 characters long. It can contain text, photos, links, and videos, which automatically take up to 22 characters.
• Twitter Marketing - Marketing the business on twitter by using its potential.