i am trying to build a list using PPC ads. I am using aweber for auto-responding. my question is regarding all the people that enter email, but never confirm. should i just add them to my list anyways? i have landing pages, with an affiliate redirect after signing up (entering email). i've noticed that the majority of people never confirm their email and therefore never technically end up on my list. should i require email confirmation before i send them link for the free video (affiliate offer) which i promise on my landing page? (instead of direct redirect after sign-up) is this a reason for not using an auto responder such as aweber?