This is pretty interesting and surely didn't know that you can do that and use hidden elements and still preserve the source of a piece of information. While there is a long road ahead but considering that blogging is one of the HIVE core function, I think is great to inspire and use such approaches.
While you don't necessarily need SEO on HIVE, you need it on other web pages to have good ranks.
What we don't want is for anyone to think Hive is just a content racket trying to game the system. Paying close attention to SEO guidelines reduces the chance of being perceived as a "copypasta ring."