This time I really got it
http://hawksey.info/tagsexplorer/?key=tsBH8o3Ft5RDstlzhodKzeQ&sheet=oaw

The part I’d left out was step 9 here
http://mashe.hawksey.info/2011/11/twitter-how-to-archive-event-hashtags-and-visualize-conversation/

Now I see how it works, what’s the link for Rhizo14, if anyone has it handy (or I suppose I could make it myself, if no one’s replied by the time I’m back from my jog)

I think this was an example of enforced independence
(formerly known as stubborn doggedness)