1. As to / As for : is there any difference in meaning? I think of "as for" as an introductory expression: As for Mr. Jones, if he doesn't like it, he can lump it. The expression is similar to "Regarding Mr. Jones,". You can substitute "as to" in this sentence, but you may not substitute "as for" in sentence #2.
2. Is the follwoing sentence correct: "Make information un