Tom Coates’ house has a feed ('House of Coates') connected to wi-fi-enabled sensors that keep track of temperature, lights and movements.
ShadowMe is a new app for iOS 6 that lets users view the tweets that celebrities and others see in their feeds.
Birmingham Archives in the UK is tweeting unusual liner ads from old local newspapers.
Events aggregator London Interesting offers a more granular level of specialization.
Exemplifying the quickening movement towards "the internet of things", this concept reusable coffee cup contains a solar powered clock, Bluetooth integration with your mobile phone and respective real-time Twitter feed, as well as automatic Foursquare check-in.