30Boxes!

30boxes.com is quite a find for an online calendar. I think this will work for my small office environment, which has 7 workstations, 8 employees, lots of appointments out of the office, with scheduling necessary all the time. Updates are almost immediate, and this calendar is simple to use while still having a ton of nice features. You owe yourself a look at 30boxes.com.

[update] stopped using, since there have been no updates.