Landing page question

I actually have a few questions, and I have been doing some searching for the answers, but I haven't been able to find the exact Q/A.

My first question is probably pretty obvious, but I just want to make sure I understand correctly. Does a landing page, instead of your ad just going straight to the offer through a redirect or 100% iframe, convert better? I would highly assume it would, but i want to confirm, since my opinion isn't the voice of reason.

My second question is about the domain. My plan is to just make a domain for each CPA offer I am promoting. It wouldn't be my ideal preference to create a website with articles and reviews, and within those promote the offers. Am I wrong in what I want? When I say make a domain, I mean just a domain with an index that is the landing page (if it is determined a better idea), or the iframe. Again, it wouldn't be my preference to build a website for each offer either, i.e. multiple pages of information about the product I am promoting.

My final question is about a sqeeze page. I am not completely sure what a squeeze page is, but from my reading, it's a page where you "sqeeze" more information from the traffic you have gotten. For a sqeeze page, the only way I can see it working, is if I created a whole website based around one offer. I say that because obviously it wouldn't work with the iframe idea. Would it be able to work having a hybrid landing/sqeeze page?

I am currently awaiting acceptance into the networks I have applied to, and these questions have been looming in my head for a bit. Any help would be greatly appreciated. Thanks in advance!