Which Creative Commons license would you choose for your blog?

I have been planning to publish content under Creative Commons. I am thinking to choose either ‘by‘ or ‘by-nc-sa‘ license, little confused because of existing content.

I have some code published earlier under BSD, MIT and different license. Is applying creative-commons going to affect that?

Thought, I would seek for some suggestions by asking everyone. Which one would you choose for your blog? And why?

Thanks in advance.

 

Update: Creative Commons doesn’t recommend applying it’s licenses on code. It solves my problem, I guess I can choose one of relevant licenses now.

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