Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
So you've seen my hasty "Linux is about choice" post already. In all fairness to Zimbra, it's a great product, and I'm sure many people rightly swear by it.
Part two of my rant deals with another situation that is slightly different -
"Why then, do applications (or their developers) decide to take away [or keep] that choice?"
While the Zimbra example is easy to argue (and has been suggested already) as a "bug", my second example could be purely opinion.
Think about the great program gnome-power-manager. For those of you who don't know Gnome / Linux, gnome-power-manager is an all-in-one laptop battery monitoring tool. It has the standard battery icon showing charge level; a power history graph showing power history, voltage history, charge profiles and more; as well as LCD backlight, sleep and hibernate controls. And in my opinion, it does a a great job!