Hi HN, we're Rory and Conor - two undergrads in Dublin. Metro lets you write your own data-collection plugins which others can install to donate/sell data to your project. The DataSources are dynamically plugged into our Chrome Extension when you press "enable DataSource" on a Metro project's page.<p>Metro is just 3 months old and we just opened the site for public signups this morning, but hopefully it works okay and you can do some useful stuff with it. We're full-time students and learning as we go, so keep an open mind (and let us know!) if you find any bugs or problems.<p>The feature you might like best is Open Data projects, which are projects which give every contributor access to all of the data.