In these states a grantor must warrant that neither the grantor nor anyone associated with the grantor has a claim to the title.
The rhyme scheme does serve as emphasis to point out that we as humans are not perfect but we desperately try to be.
Although they are relatively common and most real estate agents have experience dealing with them, they are generally used in transactions where the parties know each other and are therefore more likely to accept the risks associated with the lack of buyer protection.