I was just reading through the forums and thought of an interesting topic...how often do you change your zen cart template? And what I mean by that is major changes - not just adding a sidebox here or there, but major changes such as different colors or an entirely new theme.

I don't really know what I will do (I just opened up shop). I love the design of my shop now and it is based on the standard zen cart template. And I know that customers can get annoyed very quickly if you change it often. But it can also begin to look outdated fairly often also. With all of these things in mind, I think I'll probably shoot for a template change/upgrade/modification about every year and a half. What does everyone else think?