LinkedIn: Are Groups Useful?

I’m a member over at LinkedIn, and I’m also part of a few groups there. I get the weekly digests, and casually browse through them for useful/helpful information, but finding it is rare.

I can’t remember a single time in the last eight months that I’ve seen a discussion in the groups that I was genuinely compelled to read (let alone join). But maybe I’m in the wrong groups. I’d be grateful for any shared experiences and group recommendations because, now, I don’t see the point. Just a lot of fluff.