Note: I'm very selective about who I list as a spammer. I'm quite confident in my assessment. The full details on how I decide to list someone as a spammer.
Monster is a job search site. I haven't looked at it in a long time, but my recollection is that most of the job listings are recruiters who don't have real jobs, they just want to pad their databases. Perhaps Monster has cracked down on that. However, they've also started spamming me.
Monster.com has started emailing me at work in the spring of 2009, encouraging me to list jobs there. However, I do not hire people. My email address is not listed anywhere as a contact person for employment activities. I don't believe I've given my work email address to monster.com for any purpose. Conclusion: Monster.com is a spammer.
A log of spam I've received from Monster / Monster.com.
From SEMA-CR-1-1DELETED@campaignbounces.monster.com Tue Apr 28 14:13:47 2009 From SEMA-CR-1-1DELETED@campaignbounces.monster.com Wed May 13 15:55:04 2009 From SEMA-CR-1-1DELETED@campaignbounces.monster.com Wed Jun 10 13:46:28 2009 From SEMA-CR-1-1DELETED@campaignbounces.monster.com Tue Jun 16 11:18:15 2009 From SEMA-CR-1-1DELETED@campaignbounces.monster.com Wed Jun 24 11:22:51 2009