I've always gotten great tips from my aff manager if you analyze the landings together. They may even give you custom offers if they see potential on one of your campaigns - like internal "test" stuff.
You pretty much have to trust your account manager, so yes I do. Plus they could probably get it from the referrer data if they wanted it.
Yeah I'm sure they could see what page your clicks are coming from. I share mine with my AM, get some tips and criticism.