On offers that require creative approval, what's the best way to handle this?
Seems one is sharing ones methods and artwork with network and advertiser personal who will then compete on the offer.
Is there a way to limit theft in complying with such requests?
No one gives a shit about your creatives unless you're doing something completely original and driving huge volume.
Once you're driving $5k+ per day to an offer and you have a history as a publisher they'll care more about getting your quality traffic than being uptight with their creative process. The reason they insist on checking out your creatives is that it's way too common for new guys to ruin things when they don't know what they're doing.
I used to worry about this a lot, but now I just show people that insist on things early on and roll with it. It's when they come back to you AFTER you've done volume demanding your creatives that they're full of shit.