Fast and efficient post tagging using multiple tag suggestion APIs, plus mass tag suggestions and editor.
Auto Tag Suggest retrieves data 'on-the-fly' so this can sometimes happen when services don't respond the way they should. If this happens you can: First, try to refresh the page. This should fix it 90% of the time. Second, clear your cookies for your site and access the page again. Third, if it really comes to it, close your browser and reload the page.