I participated in twitter's #Agchat last night since the discussion topic was water. What an experience! Probably 100 or so avid #Agchat folks offering insights into water and ag issues - many times simultaneously.
If you've never stopped in, maybe you should give it a try. The person moderating posts a question that either they pose or has been submitted by one of the participants via twitter - pertaining to the stated topic. Then the comment and discussion begins and you'd better be a fast reader and an even faster texter. The positive aspects of the process are:
1) Some of the folks have some really useful information they provide;
2) The entire discussion is normally captured and made available for reflection;
3) The participants are available for further discussion if necessary;
4) The participants usually span the entire country; and
4) The ability to follow any of them via twitter broadens your info-net greatly.
The negative aspects are:
1) The conversation can be difficult to follow in real time;
2) The technology doesn't always cooperate; and
3) With only 134 spaces many ideas are hard to articulate effectively.
All-in-all I enjoy the sessions I have attended. You don't always have to participate although the moderator usually wants you to introduce yourself upon arrival - and they strive for professional comment and conduct.
If interested, #Agchat (strongly focuses on advocating for all things ag) happens each Tuesday evening from 8:00 PM to 10:00 PM Eastern time and you'll want to use a twitter application like twubs or tweetchat to join so that you can see all the comments.