Joe has already mentioned the first three presentations we saw at This Happened. Over to me to tell you a bit about the last two. Firstly there were Russell Davies and Ben Terrett, a.k.a the Really Interesting Group, who talked about how they created a newspaper-format booklet, composed entirely of text and images culled from the net. The booklet, called Things Our Friends Have Written On The Internet 2008 included all sorts of content, including the complete Twitter transcripts of the Mars Phoenix lander, and Dan Hill’s epic blog post The Street As Platform. As well as discussing how they chose the content, and the typographic in-jokes that they used, their talk pointed out how easy it was for them to get a 1000-edition print run made, and highlighted the way in which denizens of the internet can now co-opt traditional media (they started with this provocative challenge to print journalism: we've stolen your business, now we want your machines). For instance, to get your very own magazine printed, you simply have to upload a PDF to MagCloud. Or, get creative with a snail-mail API such as ViaPost.

The final presentation was by Michael Cross, who talked about his current obsession: to create a system to allow people to walk on water. Called Bridge, it was first demonstrated in London in 2006, although his ultimate goal is to create a permanent installation to let people walk across a lake. As well as discussing the purely mechanical, human-powered system he used to build this, his talk was a fascinating insight into the design process, and his motivations for creating it (for instance, making something that is simultaneously peaceful and dangerous). Watch the video of it in action to appreciate what it does.