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.

All altcoins are invest at your own risk,so any recommendations that you're going to get from this thread consider this investment with risk,the only profitable altcoins now are those listed in the top 10 in the coinmarketcap,there were a lot of new coin,but you should use your own judgment if you're going to invest here.
If you ask me Burstcoin is a good invesment.Icobid CGC project and Victoriouscoin are promising coin this 2017.
In any cryptocurrency, be it Bitcoin or altcoin, always exercise caution. There is always a risk when investing in anything.
If you want to find a coin worth investing, check its previous performance and how it holds up during large fluctuations.