I am fascinated by this and I am a "lurker" on 28 days later and Derelict Places. I have had a fascination with this sort of stuff since I was a kid, inspired by disused railways and stations. However I see myself as a bit of an observer rather than 'doing it'. I'd like to have a go at it but don't know anyone who I know who'd be up for it.
I started looking at 28 days later when a colleague of mine said there were loads of reports on the old tunnels that ran under the Rover factory in Longbridge Birmingham. I lived right opposite the car factory so had a always wondered about the tunnels, and some of the reports on these were fantastic.
Round here a lot of people so the Sleaford Maltings and Nocton hospitals, but they are in a bad way now. I love looking at reports of places where stuff has been left in situ, like old papers/food packaging/photographs of people. It's creepy but fascinating. Maybe I also find this stuff interesting as an like social and industrial history.
Oh and abandoned theme parks are good too
