Speed was my main motivator for doing this. There's other booru software than shimmie already (danbooru is open source and Rails, like mine) but they're all quite bloated and clunky, having succumbed to feature creep and being based on old SQL-limited architectures. Fast, scalable and ruthlessly efficient is what I've been aiming for.
Animated thumbnails were murder to get working but do work rather nicely. Another nice thing is that all the thumbnails are generated on the fly and then cached by a HTTP cache layer sat in front of the app, so I can actually do quite complex things with the images. I have some ideas for other views of the site ("wall mode" will be 100% fullscreen, no menu or anything (maybe a basic one), grid of images filling the screen, constantly updated as new ones are uploaded, for instance) which I'd like to implement.
As for clop... well, add some and it'll be there, just don't forget to tag questionable/explicit and anything else relevant
Seriously though everyone, please do upload. If you find awesome shit, upload that fucker at once. Let's get this filling with content and then we can start plugging it to the wider community.
Oh, and that.. thing is kinda awesome in a scary, bizzare way, Edara.