The problem of some top20 coins is that their characteristics are too advanced for the average buyer.
Buyer wants a coin he can understand what it does.
Litecoin he can understand. It's BTC but faster.
Darkcoin he can understand. It's BTC but faster+"darker" (private)
DOGEcoin he can understand. It's BTC + faster + "funny" + billions of coins for the lulz
Namecoin... wtf is this, yeah well we already have DNS
Protoshares...
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Ripple...
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Mastercoin...
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
NXT...
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Maidsafe
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Counterparty
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
So how is someone to buy if there is no understanding what it does. And those who do understand thinking "oh that's great, has vast potential" etc etc, well, they are waiting for the "simple money" to jump onboard so that they can get appreciation on their early buying. But the simple money doesn't follow the large money / early investors because they don't understand what these coins do.
Cryptomarket is weird. You can sell a simple concept but not a complex one. The more complex the coin is, the better chances it has to get itself buried.
If this post has widened your understanding* of the "complex-coin market" psychology and why some coins tank when "...they shouldn't", tip freely
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
*
This is an expensive lesson that one will figure out only if they've burned their money in "complex coins".True,some coins are too advanced for some average buyers and they don't understand very well in what they are investing.
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)