thegreatpretender - 2:36 am on Mar 2, 2007 (gmt 0)
I have this one channel that produces 60% ctr. At the start of the day it has a nice epc but declines at the later part of the day, though. This is running for over 2 years now without any problem. So 5% ctr is pretty normal to me and you don't have to worry about it, no matter what ctr you have, as long as you are abiding by the google tos.