Which crypto currencies have their own stack exchange site? I believe a coin has a solid community backing if they have their own stack exchange site. Which other crypto currencies aside from Bitcoin has their own stack exchange?
Stack Exchange Sites for Cryptocurrencies:

Bitcoin
https://bitcoin.stackexchange.com/

Ethereum
https://ethereum.stackexchange.com/

Monero
https://monero.stackexchange.com/

Other Proposals:

NEO-Blockchain
http://area51.stackexchange.com/proposals/110921/neo-blockchain

Augur
http://area51.stackexchange.com/proposals/106367/augur

Factom
http://area51.stackexchange.com/proposals/114019/factom

Sia
http://area51.stackexchange.com/proposals/114211/sia

Golem
http://area51.stackexchange.com/proposals/109578/golem

These are the present list to the best of my knowledge.