The Pope is now on Twitter

Pretty much no one has an excuse for not being on Twitter now.

Twitter launches its own URL shortener

Twitter has finally solved one of its biggest problems.

Twitter's new "Follow" button simplifies tracking

Twitter has just launched a new feature that makes following third-party companies and websites easier than ever.

Twitter cuts a $40 million check to buy TweetDeck

Twitter has just inked one of its most expensive deals to take.

Charlie Sheen joins Twitter. Winning!

Not content with all the media coverage he has been receiving for the last few days, Charlie Sheen is looking to get his word out directly to the world, thanks to his newly formed Twitter account.

New gadget lets your dog Tweet. Seriously.

As if enough humans weren't Tweeting already, there's a new item that actually gives man's best friend the power to share his or her waking thoughts to the Internet as well.

Only 4% of adults use location-based services

Foursquare seems to be the new hot thing. "Checking in" to places on Facebook is a new key phrase. But how many people are actually using these kinds of services? Not a whole lot.

Twitter to become infected with more ads

It happens to every website after a while - as soon as there's a whole bunch of users, it becomes more and more plastered with advertisements. That is now starting to happen with Twitter.

Twitter on pace to reach...200 million users by 2011

There are now 175 million users on Twitter, ranging from senior foreign diplomats to bored 13-year-old teenagers. It's because the service is able to reach across that swath of the global population that the site should exceed 200 million in just the next two months.

Twitter now runs a billion searches every day

Twitter has just completed an overhaul of its back-end search architecture for users who are looking for specific users or messages, and it says it is now more capable ot handling the one billion queries that are generated each and every day.

Twitter to begin letting people pay for "promoted" account

You know that list of random Twitter accounts that shows up on the microblogging site? Well, soon you'll have to start paying to get on that list.

Twitter eclipses 20 billion tweets

A Japanese man posted an innocuous tweet over the weekend, which translators have had difficulty understanding, but regardless what the message actually said there is no question as to its significance - it is the 20 billionth posting in the short history of Twitter.

ACLU pledges to help keep Twitter users anonymous

The American Civil Liberties Union is to help two Twitter users fight to keep their identities secret after they tweeted criticism of Pennsylvania attorney general Tom Corbett.

Dalai Lama to hold Twitter chat today

The Dalai Lama is to hold his first Twitter conversation today, bringing spiritual sustenance to Buddhists in China in 140 characters or fewer.

Twitter joke lands man with £1,000 fine

A British man has been fined £1,000 for sending a tweet in which he joked about blowing up an airport.

Twitter launches embeddable tweets

Twitter will today launch a new feature allowing tweets to be embedded within documents.

Twitter buys another mobile start-up, Cloudhopper

Twitter is starting to go on a mobile acquisition binge, as for the second time in one month it has bought out a start-up developer that specializes in mobile messaging.

Twitter finally revamps home page

After 4 years of failing to convey its message to first-time Twitter users, the micro-blogging site has refreshed its home page that now does a better job of showing what Twitter is all about.