I think that it will be an issue with plagiarism. Like I said before, there are claims that copied articles are doing well in SERPs than the original poster. (e.g. http://groups.google.com/a/googlepro...ng/oWNS6e4DHrk and http://topicworld.net/showthread.php...inal-article!?).
If you wrote technical articles, you'll find similar posts in some forums. In other words, people who love sharing would copy it. Almost everybody knows how to do this.
Articles in the lifestyle category are rarely plagiarized unless you are a celebrity. And most of the celebrity lifestyle articles are to be used as material to become a part of a report.
Articles from people's point of view get the most chance for being plagiarized. Generally, they are the people from the same circle and websites that collect that type of information.