If you want to see what LinkedIn has really become, you should try to moderate a large group. I moderated one that had over 40k members, so naturally it was a target for spammers. The problem is that LinkedIn doesn't give you any tools to help identify spammers. Once you add them into the group, they start spamming until you kick them.

But those are the obvious ones ... the ones that post resume writing ads everywhere. They make one post and you kick them. The real problems are the "IT Recruiters". They post a gajillion IT jobs, but only some are relevant to the group. As a service to the group, you want to keep them. But deleting 80% of their posts is time consuming. I would spend 15 minutes per day moderating groups, and that was only doing a slap-dash job.

I would have to send a warning to these people advising them that they were breaking the group rules. But there was no way to track who had been warned. LinkedIn needs a three-strike rule. First spam - warning. Second spam - warning & you posts must be approved. Third spam - kicked.

LinkedIn is worse than Facebook for this kind of crap. I'm on both; Facebook delivers on what it advertises. LinkedIn does not - it's not for professionals. It's for spammers and job seekers.