Summary: Realtime, real world data visualization of Twitter updates as an art installation for GE Healthcare. We used the Arduino & Processing for the task.
This is a widget I created called Phollow. When I have some time, I will make a little webapp out of it for others to use on their blogs/websites.
I'm a fan of QR Codes. With the appropriate decoder, point your cell phone's camera at this barcode to collect all my contact info and web URL's in an instant. Click on the QRcode for a larger version if your cellphone's camera has trouble with focus