I've written quite a few columns on the topic of spying. Some were on spying on your competitors (bottom line: you are allowed to use only publicly available information; if you are the target you can engage in limited subterfuge to keep the competition guessing); spying on your workers (only when there is a compelling reason to suspect serious wrong-doing, and only when the information will be used in a focused and equitable way). I even wrote about doing Google searches on potential dates (best to have someone else do these for you and give you a thumbs up or thumbs down; knowing too much may take the romance out of your meeting.)
The latest topic I have encountered is spying on your spouse. This is a very active area, and quite sophisticated means are available to suspicious wives and husbands. I plan to write about this very delicate ethical topic soon.
Instead, looking at the impressive arsenal of gadgets and subterfuges used in this particular battleground of the war of the sexes inspired me to a different thought, very relevant to this season: How would we look if we spied on ourselves? (more)