The liquidity pool of a crypto exchange is important because it determines what kind of crypto can be exchanged or traded and how much each trade will change the price. The liquidity pool is the total of all of the currency deposited on the exchange by every trader. If this pool is small, then every transaction can have a noticeable effect on the price of the crypto in the exchange. This instability makes it very difficult for a trader to predict how much of each currency they can get at any given time.
Liquidity measures how easy (or difficult) it is to swap one asset for another. Traders want to be able to convert one asset for another asset while having a minimal impact on the price. The more illiquid an asset is, the harder it will be to trade it without causing a major price change. Therefore, liquidity is an extremely important factor to consider before deciding where to trade.

— In a 1,500-word memo obtained by The New York Times over the weekend, the company’s top lobbyist, Nick Clegg, sought to rebut Haugen’s allegations ahead of her unveiling in an episode of “60 Minutes” on Sunday night. “Social media has had a big impact on society in recent years, and Facebook is often a place where much of this debate plays out,” he said in the memo, in which he called Haugen’s impending accusations, which included blaming Facebook for January’s insurrection at the Capitol, “misleading.” He wrote that “what evidence there is simply does not support the idea that Facebook, or social media more generally, is the primary cause of polarization.”
Cryptocurrency is an asset that can be exchange for goods and services, much like normal money.