Best way to choose which coin to add to an exchange?

[ricksta]

Hi! We started an altcoin exchange (https://coinfresh.com) and we are evaluating which coin to add. There are so many coins out there now days it's hard to tell whats good to add. What do you guys think is a good metric to use?

[jawitech]

1. Check the other exchanges which coins have volume. Coins without volume shouldn't be your first choice
2. Check what coins are currently being mined (as a miner I need exchanges were I can sell/exchange my mined coins)
3. Don't do like you're god (many new, small exchanges start with a hand ful of low volume coins and "generously" give their traders the option to vote in order to add 1!!! new coin)

Good luck with your exchange. Just created an account.

[thomastaylor]

Hi! We started an altcoin exchange (https://coinfresh.com) and we are evaluating which coin to add. There are so many coins out there now days it's hard to tell whats good to add. What do you guys think is a good metric to use?

What you need is trust of the altcoin investors. In the past some alt exchanges popped out from the bottom just for stealing money from people who deposited money there.

Find a way people trust you!
This will also help you to add the good and promising coins.

[paduser]

I would say you should add coins with a new techics. Coins that are the first with a new method in mining or something else. Don't add coins that are copy from a copy.

[gustav]

- is it legit? (check code before adding for instamine, hidden premine, malware)
- does it have a real community? Do not add a coin that has no community
- avoid brand new coins to not get the blame for the scams (support established coins with longterm community like LTC, DOGE, UNO, RDD, FTC, ZET and so on because these coins are likely to support you too if you are legit)
- host never ico/ipo/ito and put a general ban on coins that were issued in that way with maybe only few well picked exceptions
- don't chase the hype to not be left with many dead coins on exchange for the sake of 3 days of volume (never go full bittrex)
- never delist a coin if you are the last market left for that coin
- never delist a new coin for low tradevolume too fast. If you add a coin you should keep it at least a few months no matter the volume.
- try to have good communication with the coin communities and devs to get things going faster for you

Just double and tripple check the coins are decent and people will like the exchange and maybe send the noobs your way 
If you want to be extra high class: don't add coins with a premine (not even 0,1% for whatever excuse)

to sum it up: stick to established crypto that is proven to not be a scam and has real community because these are the coins that get you forward and you don't need to list, delist all the time and volume once attracted will stay with you if you manage to make otherwise good service (fast and reliable withdraw/deposit, good security, good support)