One of the example emitters shown on the Wondertouch home page shows an effect of water ripples on a background , it looked great,very realistic, so I looked through my entire collection of emitters to find the one shown, but to my dismay I can't find it despite how much I search.
Can someone tell me the month and year that such an emitter was made available , I would be very grateful for the info.
It's called Drips in the default library. A nice alternative is the Wake Rings collection in the January 2004 library. You may not have noticed them because they require you to have a background image to get that effect.