We are approaching Christmas, only two more days and as we all are still participating in the MOOC #change11 I would like to take the opportunity to do a little research on cultural differences concerning Holiday habits.
As you can see we have already fully decorated our Christmas tree to enjoy the illumination in dark evening hours.
When do you decorate your Christmas tree and why? 
Has this changed over the years?
I am curious to learn your experiences.
Happy Holidays!
Ha Markus, thanks for the good wishes. Our christmas tree is on http://jjbs.wordpress.com/2011/12/18/kerstboom/
its made of water bottles.
Gute Weihnachten. Jaap