Virtual currencies. Like fiat currency, virtual currencies such as Bitcoin, Litecoin, and Ether are intended as a medium of exchange that enables two parties to transact business. But there are important differences: No physical coins or bills. Virtual currencies exist only in computer code. Except for visual representation of Bitcoin and altcoins in advertising and displays, and coin-like tokens that may be produced for marketing purposes, there are no actual coins or bills. Not legal tender. Virtual currencies are not legal tender and are not issued or backed by a government. However, many virtual currencies, which are called convertible virtual currencies, can be redeemed for fiat currency on a number of exchanges. No regulation. Virtual currencies are not regulated by any government agency or authority. However, regulation is being considered, especially where virtual currencies function as securities when they’re used to raise capital and when traded on exchanges.
And cryptocurrency exchanges are somewhat vulnerable to hacking, representing the most common venue for digital currency theft by hackers and cybercriminals like those responsible for taking down Mt. Gox.

Polkadot was designed to reward genuine investors and sorts out those that are only trading to make fast money from crypto. Investors that are well-engaged on this platform also help with decisions such as network fees, removing or establishing parachains, and network upgrades.
To buy Safemoon, you have to add Binance Coin to your TrustWallet and then transfer that to Pancake Swap, where you can then buy Safemoon. This process is pretty complex, which is why many retail investors choose to invest in alternative cryptos.