If you choose a product everybody wants - like an iPad or an Amazon gift card - then you’re risking driving unqualified leads to your list. You don’t want to end up having to pay to have a bunch of unengaged people on your email list who aren’t interested in your topic and who will just unsubscribe the second you send them the next email and they haven’t won the giveaway.
One of the reasons I signed up with WA is because I was having problems filling out the info on Aweber. I couldn't figure out where my affiliate link was supposed to go. I still don't know. I've listened to YouTube tutorials then when I try to do what they say I get confused or have questions and there is no one to ask. One day I'll see the live chat button the next day it's gone. I know it's me but it is so frustrating.
Some ad platforms will ask more of your landing pages than others, when running ads. For example, AdWords is much stricter, when compared to Facebook. AdWords typically requires that you do not have a ‘thin,’ site that is designed solely to collect leads. Because of this it might be a good idea to focus on using Facebook or Twitter, to begin with.