If you have a LinkedIn account, I strongly encourage you to change your password immediately. If you are using this same password on any other site, it is very wise to change that one as well. I also read the eHarmony was hacked, so if you have an account there, change that password, too.
First, a very brief “lecture” on passwords… hackers know what they’re doing. Please do not EVER use a password that is a “no-duh” password, like your dogs name and a birthday combined together. All someone has to do is bounce around on Facebook, your blog, or the like, see you have 3 kids, 2 dogs and one cat. Somewhere I’m sure you’ve shared their names. Eventually, it all fits together and you are hacked. And for Horus’s sake, NEVER use the same password on more than one account.