RT

Meaning 1	Retweet
Popularity
Description	Used on Twitter when tweeting something that was already tweeted by someone else; contains the user ID (prefaced by the "@" symbol) of the person that originally tweeted the topic as well as the topic itself.
Example	"RT @userid Fun things to do on vacation!"

Common Uses	✓ Social Media (Twitter)
Updated: August 19, 2011

Meaning 2	Real-time
Popularity
Description	Means it happens live, without any noticeable delay. View the Real-time definition.
Example	"My new computer can render the 3D animations I created in RT!"

Common Uses	✓ General (Online and Offline)
Updated: n/a

RQ - Real quick

RSN - Real soon now

RSVP - Répondez s'il vous plaît

RT - Retweet

RTF - Return the favor

RTFA - Read the flippin' article

RTFB - Read the flippin' book