OK, I have to admit I haven't really played with this site (basically because I'm not a big fan of sites that make you register to do just about anything -- which this one does), but this press release caught my eye:
Homeowners encouraged to share house history through new website
If you'd like to tell the world about the old house you live in, you now have a vehicle at That's My Old House. Sort of puts me in mind of If Walls Could Talk on HGTV. It looks very basic, but the site claims to have over 1,400 "house entries" in just its first month, so maybe there's something interesting brewing here. I definitely like the idea of house histories, so I'll keep an eye on this site.