30 Boxes is a nifty free Web 2.0 calendaring application. It is an online calendar you can share with certain others or make public. It may not be appropriate for a lawyer’s calendar or for a single trying to date several people without the others finding out. But it might well be appropriate for a calendar for several opposing counsel to use in scheduling many depositions within a short time or some other similar situation. Where I could see it being really useful is for busy parents. The parents would have data entry access while the children, babysitter and grandparents have viewing access. Or maybe you could use it for a Little League game and practice schedule for all of the players and families. In short, like so many new Web 2.0 applications, you just need to be aware of 30 Boxes in case you see a need for it.