App

A software program that performs a specific function that is used on a computer or mobile device.

Avatar

A graphic or illustration that represents a particular person in a computer game or on an Internet site.

Blog

An interactive website, or part of a website, maintained by an individual, a group of individuals, or an organization that posts regular entries of commentaries and events.

Crowdsource

Harnessing the knowledge base and skills of an external community for the purpose of collaboratively solving problems, sharing knowledge, or gathering opinions.

Direct message

Private messages between Twitter users.

Handle

The unique user name selected by a Twitter user. It is designated by an “@username” identifier.

Hashtag

The # symbol used in front of key words to index and make the topic of a tweet searchable.

List

Publicly or individually curated groups of Twitter users.

Microblog

A Web service that allows subscribers to send short messages to other subscribers.

Podcast

Audio or audiovisual content that can be downloaded to a computer or mobile device for later playback.

Re-tweet

The redistribution of a tweet from another user on Twitter to a user’s personal network.

Tags

Names or key words added to blog posts or photos.

Timeline

A real-time list of posts on Facebook.

Tweet

A Twitter message, which by definition must be no more than 140 characters.

Wiki

A collaborative website that can be directly edited by anyone with access to the site.