this is great and expected news, the advantage that eos social network will have over steemit is that people that gets into steemit comes for the social network itself and the benefits of a payment network but for the common users is difficult to understand how to spend or cashout steem dollars or steems. in eos you would have a positive feedback loop between people that uses eos social network and wins rewards they can spend/invest in dapps and people that creates an account in eos because of a dapp and has automatically an account available in the eos social network. it will be more of competition to fb rather than steemit.