This explains the POST, PDT and IPN return types. Ok, so not the most interesting night time reading but someone needs to know this kind of stuff.
In other news Google has bought BumpTop; the software that turns your flat desktop into a 3D interactive space. I’ve tried the software and whilst it did impress visually it did not make sense, to me at least, on a desktop machine where you have a keyboard and mouse. However I can completely see the benefits on a touch based piece of hardware, like the iPad. Are Google about to impress with some new mobile device that makes use of this technology? or maybe their own large iPad style device? Only time will tell.