I take part in many ICOs, and bounties. Recently I have noticed a trend where even tiny unknown coins are requiring purchasers and bounty participants to submit their personal info before they receive or unlock their coins. In some cases they do not even mention this until after buying. This can be very dangerous. I can see in the future, criminals could easily run a fake ICO just for the purpose of collecting the information about bitcoin and crypto users.

What could they do with this information?
Anything can happen: from simple selling user data to various companies...all the way to planning home-invasions on users. Your personal data is not something to just throw around to any shady ICO that asks for it. Especially in the crypto world, we have a lot of users that control huge amounts of wealth,  untraceable wealth, and often they keep it stored inside their homes. Think of what could happen if a criminal organization gets a list of 100s of people that store more than $100,000 cash in their house....what do you think the outcome of that would be?

derp derp