"It would take a desktop PC about 12 trillion years to crack your password" That's what it told me XD
In all seriousness, it's best to keep different passwords for every account, no matter how strong one is, it's best to have an entire page filled with strong passwords to use.
Different e-mails for each account help, or alternating them between accounts also works. Me and my brother each have two e-mails, I'm planning on getting a third one soon...
It's also a good idea to change all of your most used passwords every month, or at least alternate them between your less used ones.
Another thing to do if browsing the internet is using a proxy/proxy site, the anonymous ones work best.
Also, a safe search engine and you're good to go- if anything, you may as well throw in there a third-party cookie blocker and a script manager/extender.
Call me paranoid, but my PC's been infected with a powerful virus and one of my accounts got hacked (hence I had to delete it), so I'm not gonna let it happen again.