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.

I will add that they do worth investing as that is why a lot of folks on this forum agree that altcoin trading is the best option of generating some decent bitcoin these days but your concern is equally a lot of people concern with me inclusive as how to know the right one to put money in. I guess I will also try to stay put and watch out for more experienced analytical minds to offer some advice...