What I find most disturbing are all the self-appointed "experts" who offer classes in which they will teach their "system" that they claim will guarantee the students collossal returns on very small investments.
However there are lots of ads that I'd like Facebook to keep. Many of the ICO (Initial Coin Offering) ads are from legitimate startup companies who hope to finance their new businesses by selling tokens at a fixed price for a limited period of time.
But I only want just the _legitimate_ ICO ads to remain. Unfortunately there are plenty of ICO scams. It can be quite difficult for a newbie to determine the difference.
I had a good experience with my first ICO - I bought NAGA at $1.00 then after it was listed with an exchange, I sold it at $3.00.
I have three other ICOs that I plan to hold until the companies behind them become profitable.
Note: "sold". I have a special hatred for the word "HODL".
There are other kinds of crypto advertising that I feel should remain. I'm very happy with my Bitmain Antminer L3+ LiteCoin mining rig.
Even with mining rigs there are scams: Etherium and Monero are both "ASIC resistant" because mining them requires quite a lot of memory. They both require GPUs.
In principle ASIC ETH or Monero ASIC mining is _possible_. I expect someone will eventually make ASICs with the required memory integrated into the chip.
But there are _no_ ETH or Monero ASIC rigs _yet_. Despite this, scammers are endlessly posting on message boards that their "company" - perhaps "shell company" is a better term - has ASIC Etherium rigs for sale.