I am all for a clear differentiation between shareware and freeware. Choose one and leave stuff out of it. If, say Unlocker, is what I need I will pay instead of toolbars, nags, etc.
Shareware, may be offer a trial and then you pay, period.
Freeware, free, period. I am even hesitant about commercial use restrictions but I can appreciate the difference.
Need to point out: I have nothing against the donation model like DC because I see it as a distinct category