Re-tweeting is a pretty common practice on Twitter, but on an average day, we see maybe one out of 20 posts is a re-tweet.

Cute. I'm on the waitlist to beta a new product, and have been offered the chance to move up in the list if I tweet about it. Not doing so.

Twitter is my main tool for ensuring news balance.

The wider world is a click away, but whether we mean to or not, we're usually filtering it out.

People who know me well have learned to insist that I commit to obligations by opening my laptop and putting them onto the appropriate calendar or list - a verbal agreement and a promise to remember won't work.

It's becoming clear that the world is listening, so now we're trying to get new groups of people talking.

The uptake on mobile phones in Africa is phenomenal.