I didn't type this right in the first place, but it DOES bring up a point.

Substituting symbols for letters, we always called it leet speak—but Wikipedia calls it munged—used to be considered safe quite some time ago.

It's better not to use real words because it makes it easier for password cracking tools. If you have to, it is better to mung them, but also misspell them.

pY@zvvuD is much stronger than p@55w0rd, even if it is harder to remember. In the same vein, my bunged password would have been slightly more secure, even if someone had found my pass phrase. But in my case, my password sucked because I would have probably come back trying to put a k at the end. I have munged them like that in the past, but it is extra to remember.