In August 2014, Emerald will migrate their research content to a new platform, with enhanced usability and design features.
It is not anticipated that access to Emerald content will be interrupted, and any personal profile accounts that you have created will be transferred over to the new site. However, you will be unable to make edits to your profile (including the settings and preferences) until the migration is completed. After the migration you will be prompted to reset the username and password for your individual profile.
Take a look at the Emerald FAQ site for more information about the migration;