The voting concept will not get you kicked off zip/email submits in our network, i cant speak for the other networks out there.
With respect to scrubbing, dedupping, etc.. you will find the same exact offer will convert twice as much in one network over the other. Reason is.... the companies behind the zip/email submits want traffic, and want people to fill out leads in their paths. If you fill out a lead for a free bible then the next day a free Zune chances are youre in two different paths, meaning there are different offers in both paths, the advertiser wants the person to fill out more information so they can continue to sell his information for more offers but they also need to manage their risk with respect to the traffic they get
You need to understand how things work if you plan on working with these offers, you wouldn't be a car mechanic without knowing what a car is right? Why promote a zip/email submit offer if you don't know how it works.
Basically the company who owns the offer or path as its referred to, is making money off the person filling out other offers that fall after page 2, not the emails they collect. Other offers might be mortgage quotes, hip replacement information, education, etc... Go fill one out yourself. RULE #1 in Affiliate Marketing - Do what the consumer is going to do. Experience it yourself first.
These companies evaluate the traffic sent to them, by network and by individual affiliate in the network, most networks will pass your ID number, the advertiser knows ID 1234 is good but 4567 isnt. Good traffic is rewarded bad traffic isnt. But regardless of if your traffic is good or not you want a top payout, so the advertisers give all networks about the same payout but all networks dont supply the same quality and this is in my own opinion where the scrubbing comes in. if youre running an offer that has all poor quality traffic the scrub on that offer might be higher, your traffic might be good but overall for the advertiser all the traffic from that network is garbage. This is where asking your AM what to run helps. Also you want to work with a network who does a high volume of traffic on these offers, those networks have more pull with the advertiser and can get more things done. Off the top of my head Millnic Media, CPA Empire as well as us do a huge amount in these offers, others who are big in to one category or two such as financial or ringtones may have less pull.
AM is a strategy on all fronts, a strategy on getting traffic, a strategy on finding networks, and a strategy on finding offers. Most focus on the traffic and not the rest. This is why you see people not being paid, or they think their network is screwing them. This is because they didn't find right strategy on all fronts.