We use clog or cout for general information?

[Leon Vitanos]

I know that Cerr is for errors
But which one do i use for general information, clog or cout? What are the differences? Why is cout more popular? Is it faster?

[coder777]

read this:

http://www.cplusplus.com/reference/iostream/clog/
http://stackoverflow.com/questions/52357/what-is-the-point-of-clog