I think that any website promising unrealistic % is potentially a Scam.
Even realistic offers are also scams. The number one rule in "ALL" of any investment sites is do not and never invest because think that when the investments go bigger, they won't be able to support the payout anymore in the long run so they collapse eventually in the end.
Don't know if OP is updated as I don't see any SCAM ICO project that was posted there. ICO projects could be considered if not, as one of the biggest investment sites... they're raising millions of dollars during crowdsale.
Example of SCAM ICO...
https://bitcointalk.org/index.php?topic=2046788.0 > [ICO FINISHED]🔥Crystal - Revolutionary project for everyone🔥
https://bitcointalk.org/index.php?topic=2861323.0 > CRYSTAL CLEAR SCAM ME. ALEX VEA is big fat liar !