“There is angel investing. Is there devil investing?”

There is angel investing (with angel investors). There is no devil investing (with devil investors).
   
“If there are ‘angel investors’ are there also ‘devil investors’?” was posted on Twitter by Joe Spear on February 8, 2010. “So okay, if there are Angel Investors, does that mean there are also Devil Investors?” was posted on Twitter by Mr. Jones on June 13, 2012. “There is ‘Angel Investing’. Is there ‘Devil Investing’?” was posted on Twitter by Calestous Juma on July 19, 2014.
   
“the existence of angel investors implies the existence of devil investors” was posted on Twitter by n/a on June 23, 2021. “the existence of angel investors implies the existence of devil investors” was posted on Twitter by Cristina Vanko 💘 on August 30, 2021. “the existence of angel investors implies the existence of devil investors…” was posted on Twitter by brooke on May 19, 2022.
   
   
Wikipedia: Angel investor
An angel investor (also known as a business angel, informal investor, angel funder, private investor, or seed investor) is an individual who provides capital for a business or businesses start-up, usually in exchange for convertible debt or ownership equity. Angel investors usually give support to start-ups at the initial moments (where risks of the start-ups failing are relatively high) and when most investors are not prepared to back them.
         
Twitter
Joe Spear
@jfspear
If there are “angel investors” are there also “devil investors”?
3:38 PM · Feb 8, 2010·Twitter Web Client
   
Twitter
Mr. Jones
@OffThe_Record
So okay, if there are Angel Investors, does that mean there are also Devil Investors?
9:32 AM · Jun 13, 2012·Hootsuite
   
Twitter
FOBcityᴺᶠᵀ
@FOBcity
RT @binmujahid: If there are angel investors. Shouldn’t there be Devil Investors? I bet they’d be more fun.
5:36 AM · Mar 21, 2013·TweetDeck
   
Twitter
Calestous Juma
@calestous
Replying to @calestous
@davidsrose There is ‘Angel Investing’. Is there ‘Devil Investing’?
@entrep_thinking
12:44 PM · Jul 19, 2014·Twitter for Android
 
Twitter
Alexander
@coderinchina
Replying to @wongmjane
If there are angel investors,  are there devil investors?
6:01 PM · Sep 9, 2020·Twitter for Android
 
Twitter     
n/a
@sinquesopls
the existence of angel investors implies the existence of devil investors send tweet
5:29 PM · Jun 23, 2021·Twitter for iPhone
 
Twitter
Kønyagi Papi
@TheeBaron1
The term angel investing suggest existence of devil investors.
10:26 AM · Jul 6, 2021·Twitter for Android
 
Twitter
Cristina Vanko 💘
@CristinaVanko
the existence of angel investors implies the existence of devil investors
2:25 PM · Aug 30, 2021·Twitter for iPhone
 
Twitter
Jessica🇺🇸🇺🇦
@jessicamich328
The term “angel investor” implies the existence of “devil investors.” Wake up America
6:34 AM · Jan 8, 2022·Twitter for iPhone
 
Twitter
brooke
@brookeeeyer
the existence of angel investors implies the existence of devil investors…
11:46 AM · May 19, 2022·Twitter Web App