Tweeting - normally, that’s a verb you might associate with cartoon birds - but it's also a term describing the act of writing a Twitter status update. It's one of the most popular internet trends. All around the globe, people are tweeting their news on the World Wide Web - even US President Barack Obama tweets. But if you want to stand out from the 44 million Twitter users, you either have to be famous - or creative. German artist Michaela von Aichberger is one of the latter, she has found a unique way to create portraits of her fellow Tweeps, or Twitter users.