If you are interested in the patterns of social networking, then check this out. An entire wall devoted to tweeting. This Tweet-O-Meter Wall measures tweeting activity in nine major cities. It can be found at British Library’s Center for Advanced Spatial Analysis.

The purpose of the wall is to study the social dynamics among Twitter users around the world. Probably the only thing we get from this is a twitter timezone effect, where you can estimate the time of any given city just by monitoring the Twitter usage. Still, it’s pretty cool.

The Postal service better step up their game with gadget concepts like this one on the loose. The Stopper Postcard measures how long it takes that postcard to get from point A to point B. So, now postal workers have something else to stress out about. It’s a constant reminder of how far behind they are on any given day. Let’s hope it doesn’t push some of them over the edge.

My one question is this: How long does it count? I, like many of you have mailed things and have waited for things that have apparently been swallowed by a black hole. So, if you never receive a package, is it still counting the days up to infinity?

The Rockterscale is an advanced scientific instrument that measures exactly how hard a crowd is rocking out. The Hat of Rock measures the amount of head thrashing going on, while the dance floor mat pictured above measures the amount of dancing and foot movement happening. Note the crash barrier in front which uses a force sensor to determine how hard the crowd is pushing against it.

There’s also a webcam on the ceiling to measure the movement of the crowd as well as audio monitors to get a sound level reading. Basically, it determines if you are rocking or sucking. Rocking is complicated business after all. It’s not all just panties on the stage and ten minute guitar solos.Check out a video of the Rockterscale in action below.