Since the news hit that LinkedIn had opted in millions of users to have their details spread to advertisers, I've seen a lot of folks in my Twitter stream leaving the application. Or, at least, closing their account since you can't actually delete it. Others have changed the privacy settings but kept their accounts open.
Then I read the following tweet: http://twitter.com/#!/jasongraphix/status/101680237510791168
I understand the sentiment, but would defend my own decision to close my account on LinkedIn. My defense: the realization that I have never once derived any benefit from the application. Never. once.
What have I received from LinkedIn? Invites to connect from people I've never heard of, let alone met. The occasional spammy recruiter reaching out to me. That's about it. The rest of my usage has been like any other social based web app — I connect my account to the people I know. But I never used the service in any way.
It's not a knee jerk reaction, but simply a reduction in the junk email I have to deal with.