I sent paper Christmas cards to people who registered an account on my link aggregator platform. The website is free to use. I wrote about 50 cards by hand. The

I sent paper Christmas cards to people who registered an account on my link aggregator platform. The website is free to use. I wrote about 50 cards by hand. The addresses were provided by the users as a response to my “who wants a Christmas card from me” post. What this guy did is appalling…