Diigo bookmark extractor
It looks like the Diigo API is gone. Wandora's Diigo extractor has been removed from extractor menus. In order to revival and use the extractor, use Wandora's Tool manager.
Wandora's Diigo bookmark extractor reads data feeds provided by Diigo API and converts them to topic maps. Diigo is a powerful research tool and a knowledge-sharing community. In order to make Diigo extractions, you need a valid Diigo username and password.