Well, I guess that it is good that I changed my passwords everywhere back in April when the Heartbleed thing happened.
Here's the thing...I don't trust password managers any more than I trust websites. If hackers gained access to THAT, I would be even more hosed. It's risky enough to have passwords stored on individual sites as it is. It's even worse IMO to have them all stored in a single place online because it is one hack away from revealing every single one of them, causing me to have to go to the trouble of changing them all again.
Honestly, at this point I think that it might be safer to use different ones everywhere and keep them written on paper in my wallet with some amount of obfuscation regarding which sites they are for (codenames like "The Hardest Tea" for Tom's, etc).