Did you know, in svn there is actually a tool called the "blame" tool. For any line of code, even, you can go and see who exactly touched it, and when, and what they did. So you know where to point the finger.
I always thought that was a needlessly harsh way to name such a useful feature, haha. In a big company I could see needing to go to Bob from 3 departments over and say "what does this MEAN???" about whatever feature, heh.