Have you seen any of your publicity on Facebook before? There are several trading platforms?
This coin is still pretty good to mine. For now, you can trade in YoBit, Novaexchange or Coinsmarkets until Cryptopia fix their wallet issue. Hopefully Bittrex will add this coin in near future.
Just look at the prices:
Buy orders on
http://coinsmarkets.com/trade-BTC-SIGT.htmprice BTC SIGT
0.000007450 0.000275930 37.037969703
0.000007001 0.006300900 900.000000000
Still good to mine and sell

Beware of coinsmarkets folks, they have 9 decimals instead of 8! Just count from the left to make sure that you don't miss one