everything.
lets say you upload 100 video in a niche and 50 end up getting some views a day, if a cpa lead puts people off and you have videos that are your in the related video and its the same thing they will just go somewhere else, and if they download it and its fake they may try and find another downloadif its the same landing page/survey or whatever they will know its the same thing.
So in my opinion a mixture of 4.
1.cpa contents lock where they can see the download IE mediafire page behind.
2. PPD sites, use a couple sharecash fileice ect
3. free download in the download a link to a survey.
4. GPT referral, use points2shop and get $0.50 cent for every uk and us and an extra dollar if they do an offer over 10 cents.