I think you have it all...the thing that annoys me most is "click here for more free (whatever)" and goes to the paysite. Even if the paysite tour has free samples, I feel that this is deceiving to the surfer.
I don't mind the banners that look like thumbs, as long as there is linked text with it or on the banner- seems like a lot of sponsors have them & I see them used a lot.
I don't think that most surfers are stupid, especially after surfing around a while I think it's a no-brainer that you're going to a paysite most of the time when you click a link in a freesite
Basically, like MadMax said I try to be a surfer & if I click on something and don't go where I expected to then it fails. Personally, I usually use the paysite name, but leave the .com off - "all this and more at PaySite" kind of thing.
I think it's good to raise the discussion, though, because I notice that some subs coming through are walking a fine line. It's kinda time to stop & draw some lines before it gets worse - not meaning anyone in particular, just a general thing
well that's my thoughts on the subject lol
Ponygirl