If the condition of the game is FoW, then the participants should respect this condition and not reveal information that breaks the conditional. If one holds a view of diplomacy or sportsmanship that requires the breaking of this conditional, then perhaps that person should stick to playing sunny games. Call it a rule, call it a condition, call it whatever you want to ... if one point of playing a foggy match is remain shrouded under fog, then it is, in fact,
poor form to reveal the locations of others, even if it can be deduced from the log. It should be obvious to everyone who plays this game that reading the log and calculating your next move based on the information you are given (FoW or not) is the baseline for good strategy, on par with looking at the map.
I agree with the sentiment that it is good strategy to mislead the locations of others in a FoW match, but if everyone would actually abide (Dude!) to the condition of FoW, then it would be pointless to provide location information in an attempt to mislead others since everyone would immediately recognize it as misleading information.
I prefer FoW because most do abide to this conditional, and it makes the triumph or treachery more meaningful and significant. Playing sunny gets boring when everyone can see what ought to happen on the board next for their survival/chance at victory. I'll make the argument that FoW requires more strategy and sportsmanship because, when given less information, more must be done to ensure your rate of success.
l8r