There are many scams. Just see the "visit" for new bitcoiners "on right, you can see the carlos matos meme, he looks like a good joke but he stole millions"
So, it is the beginning of this article about kinds of scams
1 - HYIP, classic model
We can't talk about scams without mentioning HYIPS
They always say the same thing "give 1 bitcoin and I will give you x% per day for a defined time"
examples : bitconnect, cloud-minings
Evolved version : Bitcoin doublers
Scams are like pokemons (nintendo, please dismiss that), it can evolve. Bitcoin doublers are just very sample versions of hyips. Why giving x% per days, wait for unlock... when we just have to say someone to give some coins and exit with his money
example : I don't have example, it will deprecate shortly (they exit very fast)
3 - Fake exchanges
I think that you understood the title of this part, fake exchanges are same as exchanges, but only deposit fully functional, withdrawal often has problems/restrictions
example : tradesatoshi
4 - Bitcoin generators
Have you already seen ads for bitcoin generators ?
They will let you think you can make many money, but, then, they will ask you to pay "tx fees", and never send "generated" coins
example : just search "bitcoin generator" on google
5 - Readers who doesn't tip
This part is a joke. But I spend some time for writing article and (trying to) making it interesting, and seeing very little tips is a bit demoralizing.
So, please tip and give me a thumbsup, I find that very rewarding