Twitter is a Web-based service is designed to keep people in touch with friends, family and co-workers through quick, short and frequent messages. Unlike e-mail or blogging, Twitter focuses on short updates throughout the day. Users can post brief updates, limited to 140 characters, from their desktop, personal digital assistants or cell phones. Business users can use the site to keep updated with colleagues working on a project, for example.
Twitter also collects and sends updates to handheld electronic devices and operates applications for sites such as Facebook. Organizations can also set up their own pages on Twitter. SIGNAL Magazine's Twitter page can be visited by going to www.twitter.com/signalmag.