here is my way:
1. go to http://coinmarketcap.com/
2. scroll down and click on "View all"
3. click on the top of the table  "Volume 24h" to see the highest volume coins
4. Choose your requirements ( for example all coins with a 24 Volume higher than 100k$) and vote for this coins

5. You can look at all coins volume/marketcap and decide which coins you dont want on the exchange(for example coins coins with a volume lower than 1000$) and vote against them

All coins which are not listed there need to be checked another way or you could say that such coins have not enough value and vote against them.


This needs some time but i think its better to vote on every voting than not at all.