Just discovered Blueful. It’s a poem, a treasure trail across social media platforms, and I haven’t found the end of it yet. Each page contains some more words, and one link onward. So far it’s crossed Flickr, last.fm, craigslist and many more. Here’s one of my favourites:

Full-sized screen-grab here, more when I’ve found the end.  Start at Blueful to explore yourself.
(Hat tip to Adam Crowe for the link)