If you want to leave a comment on this post, or on many other sites that accepts user input, you'll first have to type in a couple of deformed looking words like this

This is called a reCAPTCHA and it's there to make sure you're human and not some spam-crazed 'bot' looking to fill up our pages with hundreds of adverts for knock-off trainers and hooky medicines.

But by typing in these words you're not only helping to frustrate spammers...

The World-Wide Web Consortium (W3C) has unveiled a new logo for HTML5 - and along with it, a new way of framing the conversation about newer web development technologies.