The problem with the age data is that I used terrible answer choices that weren't sized properly. Same for the alt coin question. They should've been drop downs with single numbers from 0 to 100 or something.
As far as asking people how much they own, that's generally a question I advise people not to answer since it can lead to spear phishing attacks. Even if you don't hold enough to be a worthwhile target, answering that kind of question normalizes the practice and ends up making people think it's a harmless thing to do. I take the same stance on sharing public addresses since it's roughly equivalent. This is one reason I don't like giveaway posts where people have to share an address - very few will create a separate one that doesn't have transaction history to one or more of their "main" addresses. It's pretty easy to look at an address and follow the transaction trail. Lots of software can make a nice web linking addresses together with transactions, making it very easy to see where it all ends up (a cold storage address). You can also deduce which exchanges they use and at what times they are active (time zone info). Pair this info with the deluge of personal info people inadvertently post on their reddit, facebook, whatever, and you've got a very good idea of the risk/reward ratio of targeting this person.
Anyway, I'm both tired and full of tasty beer, so you'll have to excuse my 'noidedness.
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