It is a prediction market for content curation and content creation.
Different with Steem, users get rewards for creating good content and also finding good content.
That means, not only authors, but also content explores could get benefits.

All upvotes cost tokens (or points) to vote, and it could help avoid some spam and bot.
You are doing investment on good content! Early upvoters for good content will be able to get rewards!

In general, U Network is trying solving the content discovery problems.