I invested in curecoin and then found out about gridcoin. Both are "help the medical world" coins. Which one has better LONG term prospects and why? Are there other coins in this sphere?
It depends whether Gridcoin plans on rebooting again and confiscating any coins that aren't burned, again. Yeah, I missed out on this and lost a bunch of GRC that I'd mined back in 2014. Just something to be wary of.
http://wiki.gridcoin.us/Gridcoin-Classic- Former Gridcoin holder, now empty bagholder.