MyDD user desmoulins, who has been trained as a temporary precinct chair for the upcoming Nevada caucuses, posted this useful diary on the differences between the Nevada caucus rules and the ones drafted by the Iowa Democratic Party.
I encourage you all to click the link and read his diary, along with the discussion thread. We would benefit from incorporating some of the changes Nevada Democrats have made.
One key difference is that in Nevada, only supporters of non-viable candidates will be able to switch to a different corner during the realignment period. That will cut down on the gamesmanship whereby precinct captains of viable candidates direct a small number of people to a rival corner in order to change the delegate count.
UPDATE: desmoulins put up this interesting post about the campaign on the ground in Nevada: