Hello citytocityca.
Thank you for your inquiry. While we had considered a thumbs down tool in the past, what we found out is that it would be of no benefit to users.
Our site is built around your great content, and ways to help is spread across the web. A thumbs down post doesn't serve that purpose (least read/liked post?).
You can use the member rating tool to rank the members around you on a scale from 1 to 5. You can periodically change your rating as you deem fit.
Thanks again for your inquiry and for your participation within the AGORACOM Community.
Regards,
AGORACOM