Works for me too as I mentioned above. Pity the tube is small. It is designed for use by hand although I have also used it with my orbital polisher, and as Taka said, it won't necessarily do a better job but it does save on elbow grease. Haven't needed to try it with my rotary yet.
I looked over our car the other night and the paint work is in terrible condition and in need of a attention. It feels really rough, lots of bonded contaminents, and there are clearly visable water marks on the bonnet. I'm a bit surprised that it feels so bad given that it's only 6 months old and is always garaged. I used a few products on the bonnet by hand: Paint cleaner - no good, then Scratch X - no good although it did get the washing scratches out, then Fine Cut #2 and it just started to do the job. It's definitely an orbital job or failing that, rotary, then clay bar for anything still stuck on, then polish and wax.
There goes Saturday just to get that glassy-smooth finish back again....