Is it better to have all prospective tenant fill out application form?

[Chanitnan K.]

This Nolo article says asking prospective tenants to fill out written applications can protect you from lawsuits filed by irate applicants that you rejected as tenants. I don't quite understand how. If you understand, can you please explain? What if you pick another applicant who's easier to please?

http://www.nolo.com/legal-encyclopedia/how-screen-select-tenants-faq-29137-3.html

And in which case do you think this recommendation is not true?

Thanks!