Facebook in Seattle has an open head count. Which means lots of recruiting attempts. I finally got them to blacklist me locally, because I was getting 3-4 recruitment contacts a month, and had been for ages and was getting somewhat tired of it. I have absolutely zero interest in working at Facebook, for a number of reasons.
Some of their recruiters were beyond ridiculous when it comes to persistent. My "favourite" interaction with them, only marginally paraphrased:
Recruiter: "Hi, I saw your impressive work history on LinkedIn and would like to talk to you about a job opportunity at Facebook" (probably the only thing "impressive" in my work history at the time was AWS?)
Me: "Thank you for contacting me, but I'm not interested in working at Facebook"
Note: This was sent direct to my personal email address, not through LinkedIn. It happens to be an email address associated with both my Facebook and LinkedIn accounts, presumably something Facebook recruiters could get at? Most of their recruitment attempts have come via email instead of LinkedIn, and reference my work history on LinkedIn.
< a few days pass >
R: "Hi, just reaching out to you again to see if you've had a chance to rethink about the role at Facebook"
M: "I'm not changing my mind. I'm not interested in working at Facebook"
< a few days pass >
R: "Hi, we have a recruitment open day coming up on $date, there will be food and drinks and a chance to speak with people who already work at Facebook. It's an ideal chance to see if there is any work you might find interesting here"
M: "I'm really, really not interested. Stop contacting me"
< $day-2 >
R: "Just thought I'd send a quick reminder that the open day is coming up in a couple of days. Hope to see you there"
M: "No, you won't. I'm not attending. Please stop contacting me"
< $day >
R: "Hi, I'm looking forward to meeting you today at the open day"
By this stage I'm half tempted to turn up just so I could punch the recruiter.
M: "You won't. I'm not attending. STOP CONTACTING ME"
< $day+1 >
R: "I'm sorry, I appear to have missed you at the open day. I was wondering if maybe I could schedule a time to speak to you about engineering opportunities here at Facebook"
M: "STOP CONTACTING ME"
At which point I went through my email backlog, marked every email as spam, and put in an auto-junk rule for any further communication from that recruiter.