Any Front End Forms
From GLMWiki
Any plugin that has a front end form should have the following:
* A way to set the email for to and from.(to should accept comma separated list of emails) * Honey pot
Honey Pot:
Create a field in the form that a normal user will not see to fill out. Add the field in the form and hide it with css or javascript. If the field has been submitted with a value skip processing the rest of the form and go right to the confirmation part. Make sure no notifications go out at this point and no entry is made for the form.