When running blackhat campigns, even whitehat campigns, many people choose to blank their traffic source, although as this is blackhatworld, I'm going to assume people DMR the traffic because they are running blackhat campigns and if caught, they would be banned, so it's quite a high risk. When you start earning high amounts of money daily/weekly/monthly on a single CPA network, with 100% blank traffic, they do tend to ask you WHY it is blank and obviously if you have no answer, it sounds a bit fishy, your going though the hassle of DMR'ing, but you don't know why? You do know why, it's because it's a blackhat campign. I've had a few of my network managers in previous networks call me regrading this, I've just simply told them the following, I am blanking my traffic sources because with other previous CPA networks, which I'd rather not name, they have traced my traffic source and copied what I am doing to promote offers, which caused my earnings to drop, as a secruity measure, I now blank all of my traffic sources to preven this from happening again. Now honestly, the AM can't really say much back to that, it's totally fair, you don't HAVE to show them where the traffic is coming from, if it comes to the point where they are FORCING you to tell them, simply explain your not willing to show your traffic source, stop promoting their offers and find another CPA network. If they do say they want to see the traffic source, after you've explained, just explain the above, if your traffic is converting well and your making them money, they are not going to want to loose you, because your making them money as well, just get your money and leave. Just my 2 cents.