The X of Y

I'm playing with YouTube. I'm a bit confused as to why I have to write my own RSS feeds out for all my friends, but apart from that it's doing most things right and not getting in my way. Fun!

YouTube is the Flickr of video, or something. I discovered today that this lazy turn of phrase is known as a snowclone. Undeterred, I watch with anticipation as Steve takes steps towards making OpenStreetMap into the Flickr of GPS traces. (It's already the wikipedia of maps, of course.)