How accurate are zillow listings?

[Donnie Brooks]

I'm new to REI and looking at properties online. I've found a few in my neighborhood that seem to be listed in pre-foreclosure/foreclosure but haven't been updated for awhile on the site. Driving by these properties they look lived in and in great condition. No fore sale signs or vacancy. Almost way to good to be true if the site is accurate.

How accurate is zillow.com on these type of listings? Or is there a better website to view current listings for these types of properties.