Bill wants to buy a small tract of land from John.
 
The land was inherited, and John doesn’t know much about its history other than he’s tired of mowing it and paying taxes on it.
 
John offers to “just sign a Quitclaim Deed” transferring the property to Bill after he gets paid.
 
Is this a good idea for Bill?  Not at all. 
 
A Quitclaim Deed just transfers whatever interest John may have with no promises of title at all.  It’s a “you get whatever I have (even if it’s nothing) and if there is a problem you can’t talk to me about it – it’s your problem”.
 
John – get a title insurance policy and a real deed!

PS. If your only title to the land is from a Quitclaim Deed; you may have problems getting a loan on it.