[adamtj]

Websites are like salespeople and the police: they can and will use your data against you.

The first time I was told about Strava, I immediately dismissed it as useless. (After all, what service could they possibly provide when I'm unwilling to tell them precisely where I go to work out?) I almost gave a quizzical look to my conversation partner, but that would have given him more insight into my thoughts than I cared to share, so I surpressed the expression.