Hello guys! Is it a copyright violation if I rewrite (reword, use synonyms, change the grammar..) the articles from a site? Thanks
Paraphrase - researched information expressed in your own words. Generally, a paraphrase is about as long as the original. The level and amount that you rewrite is subject to opinion really. If you have to question it, then it's probably in violation.
Let say you get to write a SEO topic. What you can do is to select a few site and combine them into one, expressing using your own words. That way, it would be original, what do you think?