Sadly, we have now removed Worldcoin from Bittylicious because of consistently low sales. There was a good effort from one Worldcoin member to get some volume through, but sadly this was not sustainable.
Quark and Blackcoin are both suffering very low volumes at present as well, and are thus both at risk of being removed. Peercoin has fared a lot better over the last three months and is now back in the safe zone.