ETHEREUM ADDRESS

[coingrow]

Reason is that they did really good marketing and had the smart contracts in place during the ICO rush during last year 2017. There were a lot of ICO's that had launched their tokens at that time and ETH made sure to make the best use to market their smart contracts during this period and hence gained mass adoption and popularity. I am scared for the day when all these ICO's start to dump their ETH.

[sparg]

Why ether wallet is important in Joining some ICO?

It depends on the ICO you want to join.
If the ICO wants to launch an ERC20 token then sure, you must provide them with an ethereum wallet in order for them to make the payment. It is important not to use a wallet from an exchange as it won't work and you will lose your money.