Well, it always helps to actually read the instructions. I don't know how they could be misunderstood the way they are stated on the page where we put in our 3 qualifying posts:
Use this form to request your $3 monthly forum posting bonus. You must supply three valid message IDs which reference your three example posts from the month. To find a particular post's message ID, look for it underneath the post's title.
I do believe that states twice and very clearly 3 [three] and NOT [all] 30. Sooooo many problems could be avoided around here if new folks just read the Rules, the T.O.S., and the headings that are included on every page and offer....sigh.