How do you guys select the ones with the potential?
What sites do you check?
What are your criteria?
Do you have some system?
I believe you have incentive to share this information because more of us invest in one coin, more the price is.

If everyone will go for a single altcoin with planned already then it would be pumping .
But if most of the people will go for the particular altcoin then it would be the real power of the coin .
So here that altcoin give best profit for its fluctuations , if altcoin is popular and famouse and everyone knows about that .
Otherwise you can invest in any coin like any coin with rate of 1 satoshi .
So investing in the altcoin , which us a part of trading , probably give you profit , So it is worth for investing in altcoin .