Copy – all right?

As iSummit is on its way, alive or in Second life,  nothing new is happening in blogosphere considering plagiarism or violation of copyrights (where they exist), that I didn’t see before. New two primers: the usage of bad blogging technique and the recent one of misusing RSS feeds, copying and mixing content where it doesnot belong to. Sounds familiar to me, seems like nothing can’t stop those sites/people to aggregate content from different blogs. Or can? Blogetiquette? Licences?