So, if some lines are quoted, then it doesn't bad for adsense? correct? But what if the whole article is quoted?
You can't "quote" a whole article... In that case you would need to ask the content owner if you can re-publish his article.
Google does not know if you have permission. Google only sees that you have copied another users content, and for that you will get less value in search results for that page, sometimes your whole site gets penalized. From a SEO perspective it's NEVER good to copy someone elses content. From a legal perspective you got to have permission.
Hi, When an article is copyed from AP, Reuters and so on, usually is a press release. But I understand your perspective about the influence that some websites may have to "bend" some rules. Take care, José