The effects of News Feed, Twitter and other forms of incessant online contact.

Some people who use Twitter, the social messaging Web site, are taking things a step further, posing as characters in their favorite shows.

The new media players who came to the Democratic convention were not there just to annotate mainstream coverage: they’re in the hunt themselves.

An experimental Web site allows users to upload the data they want to visualize, then try sophisticated tools to generate interactive displays.

Baseball’s playoff advertising push gets under way Thursday, when the first spots of the league’s largest ever campaign are broadcast.

George Orwell’s copious diaries are now being published every day in blog form, exactly 70 years after they were made.

Given all the nastiness on the Internet — blog trolls, flame wars, vicious gossip, pornography, snark and spam — what better antidote is there than looking at pictures of cute animals?

Mr. Sievers was a television news producer who covered more than a dozen wars but became best known to the public as he chronicled his illness for NPR in a blog called “My Cancer.”

Saysme.tv didn’t invent the loudmouth, but, as the company’s logo indicates, it sure hopes to sell him a megaphone.

In the age of Twitter and YouTube, crowds are driving the media agendas.