A Retweet is a re-posting of a tweet.
Twitter's retweet feature helps you and others quickly share that tweet with all of your followers.
You can retweet your own tweets or tweets from someone else.
Sometimes people type "RT" at the beginning of a tweet to indicate that they are re-posting someone else's content.
This is a great way to pass along news and interesting discoveries on Twitter.
You have the option to add your own comments before Retweeting—making it a Quote Tweet. When using Twitter's Retweet icon, your Retweet or 'Quote Tweet' will reference the Tweet you are sharing.
In addition to sharing other’s tweets on Twitter, you can Retweet or 'Quote' your own Tweet. This function is particularly useful when you want to re-post one of your older tweets because it is relevant again or retweet your replies to other people when you want to make sure all of your followers see it.