We have just main gateway now - Scorum.com but all content is on blockchain of SCR itself. I imagine in future we can have other gateways using SCR blockchain as a base.
But Trybe that we speak of here is doing stuff unique and is not a direct competitor technology wise.
They use tokens on EOS network and you earn them for voting and writing but the website is centralized (at least for now) content is on their website. Just the tokens are on the blockchain.
So they got hacked and went down for some days. Some posts were lost (mine too sadly).
This shows just one thing - own blockchain and content there is better than anything else. Scorum launching own token and chain is looking into the future.