Steem/Steemit is a platform with a lot of potential. It can expand beyond the current use case to be a whole economy. It could even replace Bitcoin and Paypal in time. I believe the technology is sound, but I've not studied all the code (or any of it actually). A cryptocurrency is very hard to get just right, but they have at least succeeded in getting people to use it. It's mostly a core of geeks for now. Taking it mainstream is a whole different problem, but that's needed for the next million users.
I'm along for the ride. Have fun at SteemFest