check out my profile. I am a marketeer, so my first thought is 'what would work on this platform?'
Pinterest lets you organize and share stuff (images mostly) you find on the web. People use pinboards to organise their images around themes. You can follow people and specific pinboards. It's a pretty neat way of sharing what you like and discover new stuff.
As I was pinning away, I realised that this would very much be a cool new channel for venues. Any company that is already on instagram (eg the London's Royal Opera House) or flickr (eg London's Southbank Centre) could easily create boards based on their existing images.