The multipools are an artificial way to create demand short term. In the long run they work similar to a pyramid scheme, what I mean is you create demand for the same currency in which you get paid into, so the more expensive that currency gets, the less of it you receive (remember everything needs to run through BTC first).

BC did very well because it was the first coin to exploit the idea on a large scale and a few other coins (FAC for example) managed to get on that train for a short ride.

People need to be more concerned about building a strong community, about merchant adoption and about continuous development in order to stay on top of the wave of coins that are coming each and every day.