That's the thing about open source. The original don't always work out to be better than other coin which uses its feature. Because other coin got its own feature on top of talkcoin feature. If u compare Navajo with talkcoin right now , i would say Navajo is better than talkcoin because it has what talkcoin has on top of it's own feature.
Talkcoin need new innovation feature to keep up.
New user would rather investor and use Navajo instead of talk coin simply because it got more to offer.
I don't compare apple with orange.

Navajocoin is a rebranding from Summercoin which over 3 months old and more than 20 mil coins available for trading. What they announce in the rebranding thread are all promises and they even got the funds to do that. We only announce something if we're confident that we can accomplish that, not showing a promise and getting the coin pump.
What i am trying to point out is coin need constant innovation and feature to keep it going and compete for investor with other coins. When coin got nothing new to offer for too long , it just die off. Talk coin is half way through. I just want to point that out although it's obvious.