I have a forum and some of the posters post articles from other websites that are on-topic for the forum we run. The members who post them always posts a link to the article source and they sometimes either post the full article or sometimes a few paragraphs. What i ask is it legal to post other peoples articles on a forum without there permission? And can anyone who admins or mods a forum give me some advice on this issue and what they do to deal with it. Thanks