Many traders avoid trading ALTCOINS altcoins (indecent title: SHITCOINS), because of their small caps, which are easily manipulated. This is true in small time frames, such as 15 minutes and 30 minutes. In a higher time frames, it may be different. Because almost all crypto currencies are following Bitcoin in the first place for most of the time, manipulating currency prices does not always succeed. Take TFUEL as an example, the blue->green signals have alerted three bottoms. It seems that to manipulate price is not always easy.
DISCLAIMER This is only a personal opinion and does NOT serve as investing NOR trading advice. Please make your own decisions and be responsible for your own investing and trading Activities.