This is my first time with PPC and I'm just kind of messing around with a split test right now-- I have two ads with different ad copy targeting same people. One ad is at $0.20 CPC, 3,382 imp. only 4 clicks for CTR of .12%.... The other ad I put up later in the day is at $0.20 CPC, 750 imp., no clicks. The thing is, it's a very specific market... I expect the CTR to be very low-- .12% is probably normal for this, but 2) will FB stop showing my ads at this CTR? Basically, will FB pull my ad?