LinkedIn Was Breached. Now What Do You Do? - NYTimes.com

See the full article for some useful tips on preventing inadvertent over-linking

"As hackers work quickly to crack those “hashed” passwords — –165,000 passwords have already been cracked and posted online– — LinkedIn users would do well to change their passwords immediately.
Here is the important thing to note if you are worried about your password being taken. You need to change the password not just for LinkedIn, but for any other site where you might have used the same password, or any site for which you might have given a simple password for that matter."

LinkedIn Was Breached. Now What Do You Do? - NYTimes.com