Hi, @chuuuckie, I am from @SnaxTeam. I will try to answer the questions raised in this post, I hope I understood them correctly)

1. Why Steem?
   Steem is a blockchain-based social network with awards for content authors. We have a different approach to calculating rewards https://hackernoon.com/decentralizing-social-media-rewards-steem-and-snax-comparison-ac17201824cc, but definitely a lot in common
2. Why Twitter, not Facebook and Instagram?
   We analyze the data of all users that are publicly available in order to compile the Attention Rating list (not Twitter API). At the current stage it was more convenient to implement it for Twitter. However, we are working on integration with other social networks.
3. How can you use SNAX?
   At the moment users can send SNAX to friends and favorite Steem and Twitter bloggers. You can also vote for Block Produсers and purchase of network's computational resources to create Dapp. Snax is not listed for trade on exchanges yet, but we are negotiating and working on it.
4. About data security
   Browser extension is needed to use snax.one UI to bind your social accounts to Snax and to make transactions (just a wallet functions).
   All the content you create, is grabbed automatically by the oracle
   the whole code of Snax extension is open sourced https://github.com/SnaxFoundation/snax-browser-extension. We use clipboard permission to copy mnemonic phase which can be used to create an asymmetric private key. Also we use it to copy your export private key: But that’s it. You can see the same permissions for Google Docs Offline, for example