Especially Admin and C-Panel accounts.
I actually use to use a memorable password letter number mix, but it simply isn't good enough anymore.
BAD : my3good4pass This can get Bruteforced
GOOD : IxKUozu9EZiA0iWJ3TnQ Good luck hacking that
For a good break down on passwords, check out this post
So here are some great little programs to fix that, so you can have long highly mixed passwords and different for every site.
Pointed out to me by Brainy in the phpBB Weekly Podcast
[11:44:53 AM] <Brainy> Check out KeePass
Well here it is
Excellent little program that can give you all kinds of generated passwords, long, mixed, and store them in a secure database on a locked USB stick.
Works good on my Vista (32) and has 64 bit drivers so it should work there also.
For Mac read the next post