Loopnet also has tiers of paid subscriptions.

Registering the contract at the title office may well prevent the Vendor from being able to place a new mortgage when the current term completes.If you check the banks covenants in their mortgage subscription agreement, you might well find registering such a contract will provide them with the option to accelerate repayment of the note.  

I have registered on one wholesaler's site that I found from a posting on CraigsList, and also registered on MyHouseDeals with a 3-month paid subscription.  

Responded to leads from prior mail campaigns and subscription sites – We received a few leads this week from a couple of different sources.

http://clarusresource.com/investor.htmlIt looks pretty slick, I'm just not sure it's worth the $35 per month subscription?  

It costs $1-2 thousand per year for dues to your local NAR chapter and subscription to the MLS, education fees etc. 

Also, recommend getting a trial subscription to P.I.

Do I need the upgraded subscription?

If the successful bidder, you'd get a deed that puts you in the ownership position (and condition of title) that the collateral was in at time the lien recorded, subject to any remaining senior liens, typically property taxes and such.You can probably find the answer online by either county recorders online access or, absent this, a subscription service such as PropertyRadar or other commercial online service.Lastly, you will probably not be able to get title insurance from point of purchase unless it is offered by Auction dot com.

Their website has a free subscription, but that gives limited access.