This is an excerpt from our community guidelines:You should NOT post information that is copyrighted or owned by any individual or entity other than you on the discussion or news forums without the express consent of the owner.
When you are reposting an entire blog entry, you are violating that guideline, since they own their material. There's a big difference between commenting on something that someone mentioned in their blog or quoting one or two sentences in a post, and posting the entire thing. When you copy the whole entry, not only are you violating our guidelines, but you're probably also violating the terms of use of the site from which you got the material.
So...don't do it.