The "H" you are referring to is now the symbol for featured hubs, which has replaced the little green dot. The blank space now designates an idled hub or sleeping hub as many hubbers called it. That replaced the sleeping Zzz's which were much easier to see. Here's a hub with a quick fix to get your idled hubs back into action - https://hubpages.com/community/Quick-fix-for-your-... I hope this information helps you out sharingknowledge.