I like most blog/website owners allow guest content but I don't usually charge for it. The person can post their article/post and in exchange for the content, I allow them to link back to their own website/blog. So imagine my surprise when yesterday out of the blue someone contacted me offering to pay me to post guest articles and sponsored posts on one of my blogs that hasn't been updated in several years. To be honest, I had forgotten about the existence of this blog as I had the domain auto renewed several years ago. Should I be weary here or is a new trend for blog owners to actually get paid for allowing others to post to their blogs?