Wow, loadsa people I know are on it at the moment. Seems to work better the heavier you are and you really need to stick at it.
One guy at work has lost about 16 pounds in under a month but he is really strict on it. So it does work.
Side effects seem to be bad breath and tiredness (Although lethargy can differ in different people, but the pongy breath seems universal).
Shame you don't like fry ups, that seems to be the best part
Personally I am just trying to cut down the sugars and carbs, I couldn't go without my toast.