these blockchain are still very untapped and just recently there was an announcement of a collaboration with bitshares and the first world's decentralized cryptocurrency Bank. click here for more details.
This project will make bitshares blockchain to be among the top 2 blockchains by 2018 ,either before STEEM or after STEEM. so if you have not been getting steem and bitshares, well you should because they are still cheap, compared to their future prices.
STEEM is currently $2+ and SBD still looks good at $11+. as long as SBD is up, authors on steemit will get extra value for their work.