Not everyone trusts social media. Many people don't have Facebook or Reddit accounts, and would be much happier paying for their account.

AnonSteem is anonymous because I believe everyone has a right to privacy. There should be no reason for me to ask for personal details just to create you a username on STEEM. So far there has been no known abuse from accounts made by AnonSteem, many of the accounts have went on to be successful steemians.

BTC/LTC means you can pay with Bitcoin or Litecoin, they are popular cryptocurrencies similar to STEEM and STEEM Dollars. I explained in the original post that I don't allow STEEM payments because that would link you to AnonSteem and possibly reveal the link between your multiple accounts without you realising the risk.