that’s right esmi, there is no dupclicate content penalty ?? lol , cause I get first page using duplicate content Though I am not proud about it! cause my Adsense CPC suck’s lol ??
and for zimbrul I think you should do what you think is best by providing usefull information about author/you, ignore about SEO over do or what ever it calls! just do what you like as long its not over do I am sure you’ll safe! ?? just my two cent’s
and if you want to knows about SEO read this as your SEO guides
https://googlewebmastercentral.blogspot.com/2008/11/googles-seo-starter-guide.html