How much can you share unpublished forum articles?
If you are unclear on the matter, I would ask the person who sent you the article. Asking the editor or authors may get the person who sent it to you in trouble. In most cases, the first answer is probably no. However, it may be true in some cases where there are no provisions on the confidentiality of the article. When sent out to be peer reviewed, they usually stamp the title page of the article with the confidentiality clauses. I don't think you should contact the authors until the peer-reviewing process is over, but that doesn't mean you can't. They might just refuse to comment. The last two questions you have posted... You most definitely cannot do that. You could get in major trouble for early distribution of research, especially if the project is not finished. You may face academic dis-accreditation which would make it very difficult for you to ever be involved in the academic community. This would be especially true if you wanted to peer review articles for that journal in the future or if you wish to publish articles with them. You would likely also face difficulties publishing in related journals, which may be problematic if you choose to work in an academic setting. If the author has a link to the article on their webpage, I would suggest you contact them and ask for their permission to post it on your blog. Doing so without their permission is an infringement on their property.