They must sign the form.The IRS offers an online tool that lets you check if the tax ID the contractor gave you matches the IRS records.

Be sure to check out the free tools BP provides to help analyze deals you may have and also market insights.

The frameworks others have presented of viewing the site as a lead-generation tool where you, as the host, are handling all the payment processing and screening is pretty accurate. 

Tool post.

Yes, I'm a Property Manager in the greater Phoenix area.We are a mid-size property manager, large enough to have great tools and support but small enough to provide personal service.

Well, last night he must've gone over (without telling me) grabbed his tools and left.

In today's world, with the tools we now have, I tell the investors that I work with to invest in the best market and best deal you can.

You can get the Bigger Pockets paid membership and use their Find a Market Tool to analyze.

Not good I think its a good tool for fix and flip and short term holds but not for long term holds if you have not ability to refi or enough equity to sell quickly even if you do and the sellers loan gets called they are still going to get their credit trashed. . 

Additional resources and tools via brokerage....