Microblogging is the practice of sending brief text updates, photos, audio/video clips or links and make these public on a website and/or distributed to a private group of subscribers. These messages can be submitted by text messaging, instant messaging or e-mail.
Many microbloggers provide short commentary about medical news, medical specialties or a company's products and services.
Twellow.com is currently grabbing publicly available messages from the Twitter.com micro-blogging service. They analyze and categorize each of the users responsible for those messages into the various categories found at Twellow.com.
Friendfeed is an aggregator that collects the updates from social networking websites, social bookmarking websites, blogs and micro-blogging updates, as well as any other type of RSS feed. Users can use this stream of information to create customized feeds to share (and comment) with friends. It offers a unique way to discover and discuss information among a community.