We do have an ignore function here on the skybox. If you click on the members name that you would like to ignore you will see a box open up that has that members information and an ignore option on the top line that you click on to ignore that member. After that you will not see any posts by that member. You won't even see topics that they started. To unignore them you go to your own profile, and there is a topic called Members you are ignoring and click on that and you'll see the member(s) you are ignoring and you can change that back so that you see their feeds. I think it's a better solution than banning a member, since then their posts remain and those members who don't think they should have been banned would get to continue to interact with them if they so desire.