Thanks for the suggestion!
A big differentiator is that we are purely news and events based. The others are general use (or in the case of Twitch more geared towards video game broadcasts). The idea is that this focus will help us have a higher concentration of quality news media, making it easier for people to find what they are looking for. We want to be a hub for citizen journalism.
Our content is also perpetual and will never disappear after a period of time.