Joel just updated the site with a new feature that allows you to follow the activity in an area of law in Spindle Law.  Just roll over the text of any branch in the tree (on the page for that branch) and click “follow.”  After confirming, you’ll be signed up to receive an email notification whenever anyone adds to, edits, comments on, vouches for, rejects, or nominates for deletion that branch, its authorities, its descendant branches, or their authorities.  Whenever you contribute yourself, you follow by default  (but can decline to follow by unchecking a check box, and can always unfollow), so you’ll be able to keep up on everything that’s happening in that section.