MySociety building "FOI Filer & Archive"

I just chanced upon this post on the MySociety blog about the next service they are building:

[T]he next major site we are planning to build is the Freedom of Information Filer and Archive; a searchable, readable, googlable user-created archive of FOI requests and their responses. Think of a combined TheyWorkForYou and WriteToThem.com for FOI requests and their responses, and you’ll have our vision.

[...]

We think that the best way to build a top quality archive is to simultaneously build the best possible “File an FOI request” tool, and then publish both the requests and the responses made through it in the archive. From the private desire to easily file FOI requests we hope that we can generate the public benefit of an easy to use archive.

This sounds like it could become an amazing tool for getting information about us held by business and government out into public. Kudos. Looks like they have some other Big Goals too!