Twitter

Twitter is often accused of being full of banal messages, detailing the boring ins and outs of people’s everyday lives.

People who make these kinds of comments have either never used Twitter before or have been hiding under a rock for the past year and a half.

Thousands of businesses and celebrities use Twitter to communicate to their consumers and fans, with millions of updates being posted each day. Twitter is also a brilliant source for breaking news, with many media companies drawing their “as it happens” stories from the site.

Twitter's uncomplicated API has led to an explosion of cool client apps and media sites that continually expand what it can do, including robust photo and music sharing.