We've just started to look at Rondayvoo using other browsers and it looks like there are some problems to iron out. Our primary browser is Firefox 3, so if you want to get the best experience with Rondayvoo I suggest you go with the flow and stick wih Firefox at the moment. It is on the to do list to make sure the user experience works on IE7 and Safari 3, but there's a lot of other things to get done first ! If you are on IE6 or earlier, you are out of luck, I'm affraid it won't be possible to do any testing on those antique browsers.
If you are using IE7 or Safari and find anything that doesn't look right, please feel free to reply and let us know.