I do have access to RealtyTrac (which is a subscription site) on and off because I am curious of what's going on in my market. I have found that information on Reatly Trac can be outdated or many times, duplicate. Some of the homes came and went in Multiple Listing (of which Tax record supported) but Realty Trac can have different status.
It really takes a seasoned investor to work with foreclosure properties so I think you really should consult with your Realtor when looking for foreclosed properties. If you search Trulia, you will see information on Foreclosure and Short Sales. There are many steps to foreclosure and you really need to know where you, the seller and the property stand at a specific time.
Foreclosed property ususallly do not come with disclosures and depending on the kind of liens on the property, you might think you are getting a great deal, but ended up losing the title.
I am just scratching the surface; and I won't go into details because I think you might have to read a book about this. I am sure you will get other Realtor's input on this. But if I was you, I will contact my Realtor.
Good Luck on this!
Sylvia is right. When you search "foreclosure" on this site, click on the sort for "recent activity". You will get better results than when it is automatically sorted by "relevance." I have a lot of experience in TRYING to buy foreclosures and having subscribed to RealtyTrac.com. Here is one of my many posts on the subject: