As recruiters, it certainly bothers us when we are calling around and find out that the position we are pitching has been marinating in the market sauce for months. It kind of takes the spice off the meatball, so to speak (I bring everything back to food or wine eventually)
What about when you have been working with a candidate fairly closely, with good vibes coming in both directions, so you connect with him on linkedin.
Scrolling through her connections, you find that she is connected to just about every recruiter in the free world. And they are all recent. Yet she told you that your position is her number one. Does that give you pause for concern? It should.
Recruiter groupies are dangerous. They will take you to the altar but never marry you. Because that perfect guy is just around the next update. there are some that can't say no to any Linkedin request, sure. But most of them are playing the field.
Confront them. Ask them why they are dating so many recruiters. If you still think thy are serious, meet them face to face. It wil give you a leg up on 99% of the lazy asses who never bother.
Most of all, don't ignore it.