This is the kind of threads I like to see in the forum! and it's a pity that it has gone unnoticed until now. Next time I visit a La Liga stadium near me I will share some pics with you
i don't see any problems if someone takes stadium pictures with his username/profile, which then also shows us that the user was actually in the stadium.
the probability is rather low that at this moment of the photo shooting someone is standing at the side, who recognizes the forum or your profile and knows what it's all about
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I don't see any problem with it either, what so ever. Some people on here choose to be known, some choose to be pseudo-anonymous, and some choose to be completely one hundred percent anonymous...either way, point is that it's up to each individual user. If you believe showing a photo of your profile screen as well as whatever stadium you are at is doxing yourself and you don't want to do so...then don't, simple as that lol.
Unless you are Satoshi this shouldn't be something to worry about (well, maybe if you were filthy Bitcoin rich and everybody knew about it, posting your location could give clues about where to find you, but this is not the most common case).
For those who are pseudo-anonymous like me and have nothing to hide apart from the taste for legitimate privacy, that won't be a problem.