26. The machine system of claim 8 wherein: the relatively current topic of focus or of interest that the first user is predetermined to likely have in his or her mind is automatically determined based on a plurality of temporally and/or spatially spaced apart items of informational material that the machine system has automatically detected the first user to have been recently focusing upon.
26. The machine system of claim 8 wherein: the relatively current topic of focus or of interest that the first user is predetermined to likely have in his or her mind is automatically determined based on a plurality of temporally and/or spatially spaced apart items of informational material that the machine system has automatically detected the first user to have been recently focusing upon. 30. The machine system of claim 26 and further comprising: an automated detector of implicitly or explicitly focused upon topic hinting data that is implicitly or explicitly focused upon by the first user, where the focused upon topic hinting data is that which does not itself provide on-topic usable information to the first user but is nonetheless that which can provide useful clues or hints about what current topic the first user likely may have in mind.