Ya, what he said!
EWA does not tweet / rank / circulate information on campaigns that I am not running internally with my media buyers. We never "out" affiliate campaigns and bluntly, we prefer you to hide your referrals & techniques from us anyways. If possible, it's always best to keep your traffic sources to yourself, with any network.
In our last guide, for example, we disclosed one of our traffic sources that we have been using for ages now and shot ourself in the foot - lost all our impressions because of the "gold rush" that occurred. We don't even share EVERY campaign that we run - just ones that we know there is room for affiliate creativity.
Affiliates fear that networks are "outing" or directly trying to steal traffic from their campaigns always has and will be something out there. Only time will show that it's not in a networks best interest to do that in the long run, at all.
Always keep this in mind: affiliates are here for a reason - every single one has a new take on an offer, a new traffic source, a new adcopy, a new image. Affiliates innovate - that's why this business model works for advertisers too. Without you guys advertisers would have a team of 5 people buying all the media, making half the money they could have due to the lack of creativity you guys offer.