Token approvals explained in three sentences:
Granting approval won’t move your tokens immediately, but the approved contract can transfer them at any time later, up to the approved amount.
An approval is like authorizing someone to withdraw money from your account: the higher the limit and the longer it lasts, the greater the risk.
Use separate wallets for everyday interactions and for holding large assets, and keep small approvals only in your everyday wallet.
$ETH 2246.69(+0.89%)

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Just a casual note—make your own decisions when buying and selling.