I am not affiliated in any way with the makers of amCharts, the JavaScript/Flex charting tool. That being said, I think it makes sense to change the name of the tag, which is currently amchart, to what seems to me the proper name: amcharts. After all "amCharts" is the name of the product on their website, and AmCharts
is their javascript namespace.
Just like no one would want to see the HighCharts product tagged as highchart, the amchart tag should be amcharts.