Once a novel concept, there are now many commercial sites available offering more comprehensive and continuously updated materials. At the request of our users we will keep Toolkit as an archive, but will no longer continue to update it's information. The annotations are usually written by staff writers.
Users can read about a given resource before choosing to follow the link to the site.
In some cases a rating of the resource is done by staff editors based on established criteria. These services provide a high level of human intervention in resource discovery. Yes, by Encyclopedia Britannica editors. Yes , for the product. Yes for the searching system.