Anyone have any experience with a "Tumblr Sandbox"? I have a booming blog that all of a sudden is invisible on Tumblr Search. For example I tag a post with "sandbox" and it won't appear there, previously my posts would appear for that blog under any tag. It also was the first suggested blog to follow when people looked at a very popular tag. Now it doesn't show up there... Any way to combat this? Or am I now at a disadvantage when it comes to growing my blog?