Good Afternoon stonecrop.
Thank you for your message. We decided against a thumbs down feature as the majority of AGORACOM members found the application to be reduntant.
We would rather simply leave highly ranked and recommended posts highlighted on our main discussion boards, rather than have great posts sharing the spotlight with negative posts (ps: these posts are usually removed).
Thanks again for your inquiry and your contributions within the AGORACOM community. We truely appreciate your feedback and would like to hear more in the future.
Regards,
AGORACOM