If you're building a mostly-frontend dynamic site, but want to make it share-able on Facebook/Twitter with a nice preview image, then here's one new (slightly weird) way to do it.

Go to any local attraction and you'll see people taking selfies with statues, towers, all sorts of sights. Once, walking past tourists taking pictures of Greyfriars Bobby in Edinburgh, I reckoned that some of those will be posted on Twitter. I should be able to find these, and similar pictures, automatically. How difficult could it be?

Problem: Porn.

"What Quarter is it?", and "How long do we have left?", visualised as a clock.