The messages seem to be sent out rather randomly. I did not receive an e-mail about Mike’s original report on the walk, but did get an e-mail alert for his subsequent posting saying that no messages had been sent out (top of this thread); I didn’t then get an e-mail with Dave’s reply (above).
Having the links to the reports, or other relevant messages, from the meets list is a useful feature, but the issue seems to be whether or not the e-mails are sent out.