I invite you to participate in the development of a Q&A site for questions about botany. The site would be part of the successful Stack Exchange network, of which Stack Overflow is the flagship.
One of the features of a Stack Exchange site that makes it successful is the liberal awarding of brownie points to users who constructively participate in the site. Jeff Atwood and his team have figured out the alchemy that makes a community-managed site work.
At this point, the proposed Botany site is in the stage of soliciting sample questions. Follow the link below and add your own!
Update: The proposal for this Q&A site has been closed, alas.