What are the most common Bitcoin scams in 2020?

I find and list scams related to bitcoin, ethereum and other known cryptocurrency. Usually, they try to look legitimate by inserting logos from known exchanges i.e., Coinbase, Binance, or crypto-industry people's avatars and change the wording of tweets to their liking. They even fake the comment thread by listing people's faces that know nothing about the scam. Note: Some of the websites below don't even offer secure browsing (HTTPS protocol).

List of bitcoin and crypto scam websites

Gives away 5000 BTC (Does it make any sense? No way anyone has so much money $54M today, to give away!). Their websites are offline too! That tells you something about the offer credibility. (Win-binance.com, 2019giveaway.com, 2019airdrop.com, www.drop5000.com, www.binance2yo.com).

Find below the Twitter accounts that promote the fake offer. They take Binance's logo and change the tweet wording. The Twitter accounts are dummy, made just for the scope of the offer and lack of natural following.

http://ripple10.club/
Promises the airdrop of 10,000,000 XRP to every Ripple user. Uses fake Twitter and Medium accounts with the name and pic of Brad Garlinghouse (Ripple [XRP] CEO). Typical website design below of crypto scam.

Find below the Twitter and Medium accounts that promote the fake offer. The accounts are dummy, made just for the scope of the offer and lack of natural following.

https://twitter.com/josephineboudet

https://medium.com/@promorippleannual/xrp-semi-annual-promotion-3229aead36c5

https://donate.cryptodorcoin.tk/

They send you a Google Form containing your email and say you can claim your 0.7236759 BTC!!

When you click on the link it opens a page where you have to give them your name, email and wallet address. High-risk action. I don't recommend you do that.

When you finish their smoke-screen mantra you are asked to send 0.0037 BTC to a "random" chosen "user" named Grace (always the same user and always the same BTC address, so they pratically ask you to fund their project and probably steal your money. Failure to do that won't allow you to collect your alleged "donations", which of course, are more than the amount you sent (bait), else you would have figured out the scam immediately. Don't send any funds, don't waste your time on this site or the rest here. There's no free meal.

http://Ethereum4th.com/
Promises x4 back the ETH amount you deposit.

Find below the Twitter accounts that promote the fake offer. The Twitter accounts are dummy, made just for the scope of the offer and lack of natural following.

https://twitter.com/DANTEREYES13

https://Crypto-drop.org/, https://Coinbase-promo.com/, https://Drop-crypto.com/, http://www.Airdrop2.com, https://Coinbasebonus.net/, https://muskelon547776.webcindario.com/ all under the same scammer umbrella.
They promise x10 back the amount you deposit and try to show their affiliation with Coinbase but there's no legitimacy to their claims. So, you deposit $1,000, and they give you back ten grand. Ridiculous! Typical Ponzi scheme.

Find below the Twitter accounts that promote the fake offer. They take Coinbase's logo and change the tweet wording. Even the comments thread is fake. The people listed in the thread have not vetted the Ponzi scheme. The Twitter accounts are dummy, made just for the scope of the offer and lack of natural following.

https://twitter.com/8Ball14457390