Ever wondered why a topic is trending on Twitter? A new service - that does heaps more besides - tells you. Brizzly.com: [caption id="attachment_3017" align="aligncenter" width="444"...

... but what was it for? I never did work it out. Here's the screenshot of the now dead, read-only site (temporarily until it's gone for ever, no doubt). I got the email before Christmas, but am only...