when this is going to stop?
Never. Just get used to this. Please note that this is just the beginning of the year, later I guess we will see more 2.0, 3.0 whatever coins popping up like mushrooms after rain. I expect to see this year the start of a new 2013-2014 style coin cloning era.
Exactly the only way to stop these crazy pumps and dumps or at least make them more difficult to pull of by the minority is to ensure there is no minority with all the coins to start with....then they can't pump and dump so easily if at all. They need to control the majority of the coins to make huge pump. If everyone has some and buying and selling at different times or whims this will stop their party.
Although most are not really interested in wide distribution at the start really which is fine so long as they don't pretend they are.
DEVS should be made to care about it though since they have an unfair advantage from the very start.
ICO guidelines
POW guidelines