One of the positive things (if you can say that) from the problematic start up of the mailing list is that several people expressed a desire to have a real discussion list, where alums and current students could communicate back and forth. As it is set up now, the list is meant direct notices outward to subscribers, not facilitate discussion (though that wound up being the case temporarily anyway...). One possibility would be to create a separate discussion list for those who might like to communicate outside of this more narrow blog. Others have suggested turning on comments for this site so that people might post to the specific entries.
If you have specific ideas about the merits or drawbacks of any of these options, let me know.