These people were generally interested in either one of two things — either following the plot threads and continuity of the stories, or the creator credits.
In late 1993 and early 1994, three members of APA-I interested in comic books started up an e-mail correspondence.
Tim Stroup, Bob Klein, and Jonathan E. Ingersoll soon began sharing indexing information in a common format using electronic media for storage and distribution.
The newly formed GCD grew slowly, using the new medium of e-mail to canvass friends and acquaintances from APA-I as well as other contacts in comics fandom.
Early work consisted of indexing information, setting goals, and deciding on file structure.
The database currently catalogues more types of information than originally intended, and the formats of presentation and data gathering have changed also.
[7] The bulk of the work is performed by an ever-changing group of editors and contributors through the online indexing system on the web site, or through offline submissions.
The database does not include any information on comic book pricing, nor does it conduct any sales or trade services.
Anyone interested is encouraged to contribute, by using the interface, uploading a cover image scan, or even simply sending an e-mail with new information.
The standards request that all indexing be done from an actual copy of the comic book, to ensure that data is verified upon entry.