Although I'm not familiar with the specifics of this airdrop, it's generally common for blockchain and crypto projects to conduct such activities from time to time. However, it's important to be cautious when interacting with any third-party links or services since scams can occur in the crypto space.

Before clicking on any link or sending funds, always double-check that the website or person you're engaging with is legitimate and reputable. Additionally, remember that there is no such thing as truly "free" cryptocurrency - every transaction requires some sort of fee even if it may seem nominal at first glance.

If you do decide to participate in this Optimism Airdrop Round 2 offering $OP tokens, make sure to review its terms and conditions carefully before taking action.