CMC and coingecko both very useful for us, i used to use both however i am confused why many coins and tokens not listing in CMC but listing in coingecko, not only coins and tokens but also many exchanges, is this because coingecko become more popular than CMC, or for something else.

Is it legal to send messages to bitcointalk users for advertise and marketing?without my account suspended.
Is it has a limit number for messages i can send?

I know binance is the most popular exchange, but binance and other exchanges such as okex, huobi, ...and  others forced you to hold their token to participate in IEO, so i list exchanges do not forced you to buy token.
What you think about this exchanges, do you suggest it?
If you do not suggest it, or think it is not good let me know the reason?

lattoken
probit
lbank
p2pb2b
coineal
vindax
exmarket
Finexbox
Sistemkoin


This what i know, you also can add exchange not forced you to buy token not listed here.
Some of this exchanges i use it, and some of it i did not.