When I open a link from Diigo, for example after a search, I don't want the Diigo frame on it. I would like to set a preference to not have that on each page.

Further, when I try to close it (the way one would with the analogous Stumbleupon frame) clicking the X prompts for "bury" this. I don't know what that is, but it's unexpected behavior from a close X control. So also that needs a redesign, IMO, because the interaction design has appropriated the close-X which is just wrong.