That simply mean you cannot hold altcoins longer, they are not like bitcoins so better do it in short term trades. Just always think that there is a big money in trading and your job is to spot where you can invest to gain. UBIQ which is currently traded at Yobit.net just pump this month, from 2 satoshi it pump to 299 satoshis and I'm sure there will be a lot that is coming.
I will not risk trading in Yobit as they have all the coins in the world and anyone can create a coin and list in that exchange.I started out in yobit and lost a lot of money as no one knows how and why the coin is moving and who is pumping the coin and most of the traders in yobit usually become the bag holders rather than making some profit.