How about a thread of functioning hotels that are supposed to be haunted? Post the haunted hotels near you or that you've stayed at, along with any backstory that you know. I for one would love to be able to stay at as many haunted hotels as possible in my travels!
This past weekend we stayed at the Hotel Adolphus in Dallas TX. It's reputed to be haunted, especially on/around the 19th floor. It was built in 1912 by Adolphus Busch (yes, the beer dude). It originally had a ballroom on the 19th floor. The ballroom was closed long ago and the space converted into regular rooms, but supposedly one can sometimes hear music, laughter, footsteps on the now non-existent wooden dance floor... We experienced nothing, but we were only there for one night and we couldn't get a room on the 19th floor as it was booked up.
Anyway, there are a couple of other open haunted hotels in Texas that I know of: The Menger, near the Alamo in San Antonio, and The Driskill in Austin. Haven't stayed at either, but would like to!