Yacoin is pretty awesome, the coin parameters and community are brilliant.
It's a shame it isn't more popular.
If only it had launched not as a fork but as a stand-alone coin written from the ground up, it would no doubt be one of the strongest coins.
Like essentially EVERY alt-coin in the world, Yacoin was forked from Bitcoin. However, YAC also ORIGINATED the scrypt-N (sometimes known as scrypt-jane) concept for the alt coin community as well. Every scrypt-N coin is forked from YAC.
There are probably ~10 - 15 alt coins ever released that brought something new to the table and Yacoin is one of them. That leads me to believe that our problem is lack of marketing, and also lack of participating in the nefarious plots that some other coins employ such as numerous fake accounts on BCT promoting (pumping) the coin between them, or doing the same thing on the exchanges (dumping). We'll continue to work on innovation and eventually the price will have to reflect that.