What is a Twitter Retweet?
Twitter Retweet (abbreviated as RT) is when you read a tweet in someone else's Twitter stream, if you like what that person says, you can share that tweet with more people.
To do so, simply copy and paste the original tweet and send it out. To give credit to the original person, users usually put “RT” plus the originator's username at the beginning of the tweet. Here's an example:
– The Twitter user @benparr tweets: I just heard that Apple is releasing new iPods in July!
– You retweet by posting RT @benparr I just heard that Apple is releasing new iPods in July!
The retweet tag is an unofficial way to provide attribution to the original publisher.