The passwords were actually hashed but not salted which means that over 300 thousand of them have already been reversed successfully. The file of the passwords is still floating around the net but I checked the hash list and my previous password wasn't in it, so it's only a partial list.

Any idea how it was obtained?  To me that's the more interesting issue, as it's been shown that something like 14 hashed passwords can be cracked in 45mins for $7 on the EC2.   I wonder what he's using to crack the passwords though, he must have a botnet at his disposal, which is kind of intriguing too.  

Also, other than possible reuse of passwords, I wonder what they hoped to gain by stealing from linkedin.  Are there paid features?  I don't use the site (in fact I don't social network at all).   I could understand eHarmony users are probably more likely to reuse a password, giving them the ability to log into their facebook account, gather social engineering data to break into their email and reset all bank passwords or something.

Or maybe it was just a "lets embarrass the professional community network" attack.  Who knows, internet is so weird, gotta get back to farming my diablo gear.