Simply put, this is a beautiful album. For the longest time, the Arcade Fire's "Funeral" stood on its own as the most beautiful album in my collection. Sure, many albums have beautiful songs - even several beautiful songs, but no albums until "Shut up I Am Dreaming" have struck me as comparable to "Funeral", and that's saying a lot.
I'd now like to address the spotlight reviewer. Musicans/ artists (esp. good ones) create from their heart. Sometimes a lot of people like their contribution and they are recognized i.e., fame, and sometimes their contribution never catches on. However, it is insulting to insinuate that this is "music for the scenesters" like spencer championed them as his key demographic. I am 26 and far from a scenester kid, yet I enjoy this music very much. It's like insinuating that pink floyd made music for drug users. The fact that scenesters may (or may not) like this album is just a side-effect; scenesters weren't the impetus for its creation.
This is an album for anyone that appreciates a beautiful piece of work, be it a scenester, a stoner, or a conservative, etc.