I think privacy comes apart, when money is involved. I saw this happening on this forum when Ripple was introduced. People only had to link with their Facebook account to get some FREE Ripple in the beginning. This immediately compromised most of these people and their account was linked to their real identity.
I missed out on the Ripple giveaway, but I got some Stellar Lumens last year. The trick is to be conscious about your privacy all the time: it was very easy to create a fake Facebook account, you can even use Tor (on the beautiful address facebookcorewwwi.onion). I've tested it, and it worked.
Once you neglect your privacy, it's gone forever. That's why it doesn't hurt to have some accounts without your real name ready, and a spare prepaid phone number for verifications.
After Ripple, we saw a host of Bounties and Coin drops and services where they require your social media accounts and some ICOs even implemented some AML requirements to participate.
KYC and AML kinda comes with running a legit money service (or a fake service pretending to be legit). It's good for crypto to mature, but it's crucial to be critical which companies you want to show your real identity.
Is the few dollars really worth your privacy? Your greed might cost you more, when people use this information to track you or even to link you to your main coin hoard.
That will largely depend on the country you live in. Byteball for instance still offers $20 if you register a KYC wallet (
link). They use Jumio for verification, which is also used by Bittrex. The beauty of this system is (assuming all involved parties are honest about it!) that only Jumio knows your complete data, and only an encrypted hash is stored in the DAG. That allows you to later on select which private data you want to supply to someone (it could be only your Country, but it can also be your full ID information), after which the receiving party knows for a fact that it's legit, without seeing more than you supplied. I get excited about the possibilities, as it's an ingenious system to verify your identity only once and store a decentralized hash, and I'm blabbering on about it, but my point is: $20 isn't worth it for most people in first world countries. If, however, you live in a country where $20 is a week's salary, it can be very interesting to sell your privacy for money.
