kotwica666, the signature campaign manager for
Malubit, appears to be utilizing a large number of shill accounts to defend the site they are promoting from various scam allegations.
A few accounts have popped up very often in their thread to act in their defense:
dodgrad: Posting gap between
Feb 6 and Feb 26. Goes from being an Altcoin Speculation spammer to gaining a sudden interest in Malubit, proceeding to make 40+ posts in Malubit's thread (out of 45).
Confirmed alt of kotwica666 by AvirunesYinShuiSiYuan: Posting gap between
Feb 5 and Feb 26. Goes from posting in the Altcoin section and Freebitcoin's thread to posting 26/30 posts in Malubit's thread since the gap.
keyscore44: Posting gap between
Feb 27 and Mar 5. Proceeds to post 26 times in Malubit's thread after returning, with only a single signature campaign application post in between.
altcointalk14: Posting gap between
Feb 23 and Mar 12, makes 9/9 posts in Malubit's thread
cazkooo: Inactive since
November 2018, comes back in Feb 2020, makes a few posts in other threads before starting to intensely defend Malubit
Naficopa: Posting gap between
Feb 5 and Feb 20, comes back to start defending Malubit with the majority of their posts.
All of the accounts follow a similar pattern: posting gap, few unrelated posts, and then a rapid transition into purely defending Malubit.They've had more obvious shills too:
andremalur:
Makes a positive review on Feb 28th. When they return to defend Malubit, they
conveniently happen to not have an account when arguing in favour of Malubit. Oops.
On SBR, a
user happens to inquire about Malubit on Feb 7th, before
becoming a site rep on Feb 20th 
Signature campaign has also led to some positive posts (
for example this one from YOSHIE) that happen to be merited from their shill accounts. I can vouch for elabor77 being a legitimate account who actually bets on sports (although not recreationally).
There's probably a few accounts that I'm missing.