What a load of crap:
The C.R.A.P. (Change Risk Analysis and Predictions) index is designed to analyze and predict the amount of effort, pain, and time required to maintain an existing body of code.
Even if crap was a real topic, which apparently it is, questions about whatever crap the description refers to — code maintenance and other software metrics — would seem more suited to Programmers than Stack Overflow. But of course, considering that the word crap itself refers to something that's completely unrelated to programming, and something that would very possibly piss people off, and that it's really not a meaningful tag anyway, I think questions on either site can do without this crap.