Charles Christian says... Yes, I know it was only last month I said 'sod Twitter, it is completely pointless' but now I'm back – at the request of some of my digital nomad friends who say that actually it is a useful way to keep in touch if you live a peripatetic 24/7 lifestyle – although admittedly this is using the technology as more of a group SMS texting facility. I can be found at @ChristianUncut – and this time I'm going to try to concentrate on quality rather than quantity.