This would be a great module but it need more development. As of right now there is no way to input quotes (write to the quote file) from the backend or frontend of Joomla. That would be the main feature that would make this go from an 'ok' module to a great one.
I would rather see the module be have a MySQL backbone rather than a flat file though.
-Grant
Owner's reply:
If you want to enter quotes from the backend, you can use my other quote module, Jx EvaEmma, which has this ability. I will however probably release a new version of this module with that feature as well.
If you want more features and a MySQL backend you have other quote modules available for that. This module is designed to be as simple as possible without the need of any extra components or database tables.