What is an InternetYear, how long is it, and does it have the same length for everybody?

In the internet, the development of things is much faster than in the normal world.

Sources:
* year 2000 (German) - 4.44 times of a normal year: http://www.pctipp.ch/news/14865/studie_wie_lange_dauert_ein_internet_jahr_.html
* calculation (English) - 4.7 times of a normal year: http://www.fatdux.com/blog/2009/09/22/calculating-the-length-of-an-internet-year/comment-page-1/

-- DanielBruessler @ 2010