I'm starting list of people who I think suck (most likely push scams). Feel free to add on with users you think suck.
@Coingrab
https://bitcointalk.org/index.php?action=profile;u=352667
I see this user responding positively to many ICOs that look like completely garbage. All of the ICOs this user is positive about have dropped dramatically in price.
Thanks to @BitcoinNational for putting together this list:
Adderral
david1365
KidKrypto
Black Fire
Coingrab
GenX
Accommodation
TrangLee
Manipulator
HONORABLE
CrowdWhale
b1007
If you see any of the above users responding positively to a coin, beware and do lots of research before joining!