Exchanges like Binance are participating in a lot of the airdrops so if you have some there the airdrops are stacking up. The main reason to have an account is to get the airdrops for the most part right now and if you are going to try to buy and sell ram to participate in that speculation.

But A lot of the airdrops happening right now are using the initial snapshot from when the mainnet launched.

So right now you won't gain the benefit like you do on STEEM for holding STEEM Power where it helps you generate a revenue off of it.

Now later on airdrops will start using current snapshots instead of the genesis snapshot.