In case you haven't seen it already, http://www.cnprog.com is a straight-up rip-off — in terms of style and functionality — of Stack Overflow, but in Chinese. This may or may not be right/legal; I am not sure what the Creative Commons license on this site covers.
As programmers, do you ever copy someone else's design and functionality like this?
Has someone ever copied your design and functionality like this? What did you do about it?
Is anyone else excited that they've released the source code for their site (which is powered by Django and jQuery)?
To obtain CNProg's source code (requires Subversion):
svn checkout http://cnprog.googlecode.com/svn/trunk/ cnprog