"Fresh white craters represent the youngest (post mare) group of crater types found on the lunar surface. They are defined by the beautiful light coloured rays that spread out from the centre. This is younger, fresh material that contrasts, richly, against the darker mare material from which it was excavated." Thomas J.
Thanks to Jules' July article on fresh white craters, we now have expanded the learning curve on what to look for. In the beginning any white ejecta around a crater seemed fair game
Be sure to visit this page http://forum.moonzoo.org/index.php?topic=239.0
to read more about them.
There is also a Fresh White Crater Reference Resource
topic combining the IOTW and further notes by IreneAnt.
Please post all the fresh whites you find, in this thread.