I've received the following suggestion from a Chinese CN user via email:
http://cintanotes.com/temp/1.html
Unfortunately I don't speak Chinese and Google's translation does not make much sense either:
After more than a bad label management, why not let CN be more open in order to preserve more information about group differences.
Now, I have to use other similar software to achieve this purpose.
Could someone please provide a better translation? Thanks!