In September of 2001 four people entered the Barton Mansion, which is billed as being one of the most haunted houses in California (it's in Redlands, east of LA). What happened to them is described in great detail on the Barton Mansion website
that they created a couple of years later. Included is a videoclip
of their supposed encounter with a ghost (the clip looks staged to me). I'm not sure what the purpose behind the creation of the site was. They do sell a Barton Mansion dvd, but they're only asking $9 for it, so they can't make a huge amount of money from it. Maybe they're just big fans of the supernatural, or they're amateur storytellers hoping to create a Blair-Witch style mystery.