Is dev still active until now? Yes, that's right, Sexcoin must add to another exchange so that it is better known by many people and will get trust. The rank number 1 exchange now is Binance, if dev has a lot of money, I think it is okay to try to register
Our Dev is lavajumper and as you can see he posted just the other day. As to exchanges - interesting. No one would have expected CoinEX, Cryptsy, Cryptopia, Trade Satoshi or Live Coin dot net (have I missed any?) to have all been hacked. A couple of smaller exchanges closed one in the Netherlands, not sure where the others were located. Some exchanges such as Bleutrade listed (for a fee) then delisted - without warning - then there's Yobit which is deliberately trading on an incorrect chain - they are banned here in this forum.
So the question I have for you is "How many times do the Dev Team put their hands in their pockets and pay to list *any* coin, not just SexCoin and have to exchange's owner walk away with the proceeds ( @captainfuture - CoinEX / @BigVern - Cryptsy ) get hacked ( Cryptopia, Trade Satoshi, Bleutrade) , pull the plug on the coin ( Bleutrade) or any other reason before the Dev Team says "Enough is enough!" ??
Listing on two or three exchanges is good. In the meantime, it's time to alert the masses that SexCoin can be traded on FreiExchange:
https://freiexchange.com/market/SXC/BTCyou won't get other exchanges to list a coin if it doen't have any trades on the ones that it's already listed on.
... but if you want to get SexCoin listed on another exchange, I for one will welcome the news.