(using validation plugin) Prevent spam w additional-methods.js such as HTML code in textarea w/ validation plugin ?

(using validation plugin) Prevent spam w additional-methods.js such as HTML code in textarea w/ validation plugin ?

Are their any options within the additional-methods.js such as stripHtml and addMethod

Just seems this would be a good way to prevent spam queries, without having to go to the extreme of captcha, which discourages some inquires. 

Thought maybe someone else may have solved similar issues with misuse of textareas and folks embedding links etc.

thanks in advance for any clues.