CC is not appropriate for software licenses. Per their FAQ:

http://wiki.creativecommons.org/FAQ#Can_I_use_a_Creative_Com...

Can I apply a Creative Commons license to software? We do not recommend it. Creative Commons licenses should not be used for software. We strongly encourage you to use one of the very good software licenses which are already available. We recommend considering licenses made available by the Free Software Foundation or listed at the Open Source Initiative. Unlike our licenses, which do not make mention of source or object code, these existing licenses were designed specifically for use with software. Furthermore, our licenses are not compatible with the GPL, the most frequently used free software license.

Looks pretty good - so many options for graphs and charts these days.

Why per developer license? this is difficult to enforce and also annoying.

Looks good from what I saw during the brief moments I was able to get in. The site currently complains of not being able to make a db connection.