Zentangle Recommendation

I just found this amazing site with a very interesting doodle-idea.
I don't know of the technic yet but thought it was so very interresting that I just had to share it with you all :)
http://www.zentangle.com/index.php

 
You can also watch this video at YouTube
 

I found this picture at Pak Art, it is her first attempt to make zentangle sketching and I might say it's a very fine and very good attempt, I love it so I just wanted to show it here, click on link and picture to go to her site to see her wonderful blog :)
 
 

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