This makes Steem a public publishing platform from which any Internet application may pull and share data while rewarding those who contribute the most valuable content.
So basically, that means, whatever I put on steem, people can still view/get access to it even if they're not registered in the community. Wow, didn't see that coming, that's nice.... So I get to reach out father to the World, amazing.
That is the beauty of Steem. It is like a distributed database for the content platforms. Any platform/UI can make use of this database. For example you can create a public app that fetches images from all the posts tagged "nature" and creating album kind of interface with nature photos. If you want to display only popular photos, you can add a condition to your query saying that pick images from only posts that have got more than 100 votes or 200 USD payout and so on.
How cool will that be?