I do. And my only true "ghost" ecounter was at WDW two summers ago. lol
We were at OKW, I got out of the shower one morning. My mom was in the other bathroom, in the shower. My dad was out golfing. My brother was sitting in the bedroom watching TV. The bathroom was steamy from my shower, so the mirror was all fogged up. So I left the room to throw something out, and I was walking towards the bathroom, and I sneezed. Then I walked into the bathroom and on the mirror, it said "Bless You" in the condensation.
I called my brother into the bathroom and showed him because I couldn't believe it. It was so freaky!
Here's my theory on who wrote that: The Haunted Mansion was closed for refurb at that time, so I think the 999 Happy Haunts were free to roam around.
I'm just glad it didn't say "DIE DIE DIE" or anything on it. Hahaha