DucPay.com, don't stop posting news and using social networks, learn SEO (post links on forums, websites, look trends, manage keywords, ...), just google "Ducats", it is difficult to find your site, make more giveaways (1-10 DUCs per hands with potential DUC's price can become a good $), donate for developers (websites, mobile apps). If you'll find craftspeople and arters, who will agree to sell something by current DUCs price - price will rise well and DUCs will become popular.
DUCs have price 0.00001000 now only because miners sells, cause they don't know where to spend DUCs. People should have some motivation to buy Ducats.