Whenever I find one, it has always proved to be relevant. Here is the description, I have yet to find a reliable scan for it though. <A HREF="http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:moving_average_conve" target="_blank">http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:moving_average_conve</A> It's more of a pattern than a crossover. More a signal that the underlying factors are not matching up with the pps action.