Well they all seem to move up/down daily...not really sure how predictable they are though...
If you are looking for one to make some short term money on, maybe look for one that might be in a 'down' phase (I know its hard to tell what one - but there is lots of speculation in these forums

I like ETH, and it just moved up a bunch yesterday (I did not buy any, but wish I would have been able to)...hard to tell if its gonna keep going up or crash back down a bit...if I had a few $$ I would buy some now and just sit on it for a year...if the price goes down again buy more...if the price goes up hurray for everyone.
