Not sure this is the right place to ask this... but I'll go ahead anyway
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I was contacted by a member of the Joomla! community who kindly pointed out that someone is selling my opensource GPL component (WebAmoeba Ticket System):
http://joomlapack.com/index.php?page=shop.browse&category_id=5&option=com_virtuemart&Itemid=26
I notice that they are also selling RokReporter and Joomlapack - I'm not sure what the licenses are for these??
Anyway, I'm not overly familiar with all the ins-and-outs of the GPL license, so the question is, are they allowed to do this???