I didn't click on the link cause I'm skeptical and always cautious on what I might stumble on or if it's a bait, though, your link seems okay but yet. Moreover, I'm guessing what you are referring as IPad giveaway might be one of those cost per action (CPA). OP, be cautious of who or where you submit your emails. And moreover, free gift on airdrop is just a wasting of time, and it makes some ICO dumps.
Good thing there are people like you who are very cautious with every actions you have to make. We know by experience that giveaways will lead to a scam, but not in general, there are those legit one. Specially when you have a huge of bitcoin or alts stored in a wallet on your computer, that would be very prone to hackers. I myself, if possible , get rid of these giveaways specially when things gets a bit shady, I'd rather work my way up to achieve more than those I can potentially win in giveaways lol.