I currently use a "No Avatar" image for members without an avatar. I like the setup with one exception. My RSS feeds which are imported via the Registered Feeds post as Guest and use the same No Avatar image. I would like to continue the feed posting as "Guest". The reason is the Registered Feed shows the original author's name followed by Guest. I thought of creating a "Guest" account and posting as such, but then I would lose the original author's name posting under Guest. I looked for "Guest" in xf_user and couldn't find a record. Next I looked at the thread in xf_thread and noticed the user_id = 0. There is no record in xf_user for that user id. So my question is...how can I change the avatar that naturally appears for the "Guest" account? I have a RSS logo I would like to use as a replacement.