niba comments on their tutorials

This is simply awesome. Thank you so much!

does not look like airbrushing. Poor poor example. Could be useful with a better example.

That was rly uber than every method to extract sky that i ever seen... gz:) 5

Wow, this is awesome! You really helped me to improve my photos. THANKS, DUDE!

Even tho I didn't rate it yet, I would give it a low rate. Not because of the tutorial itself, but because there are some identical tutorials in the database ;)
http://www.good-tutorials.com/track/15941
http://www.good-tutorials.com/track/12495

etc...

@mods: why did you rate it that badly? lots of beginners want to achieve this effect and don't find any solution out there.
i know, it's not that complicated or extraordinary, but to my mind it's way more useful than some other tutorials here ...