iPhone 3G UK Signal Map
After #uksnow and #ukhols comes #iPhone3GTest.
This Google Maps and Twitter mashup shows the signal strength levels of various places around the UK. The data for the map comes from Twitter users using the #iPhone3GTest tag as started by @JasonBradbury
To help improve the map you should Tweet using the hashtag '#iPhone3GTest', the first half of your postcode, your operator, your 3G signal, and how many bars of signal you have.
The iPhone 3G UK Signal Map was created by CASA as part of a NeISS project.
Via: Digital Urban