I would advise against calling users leeches. A product is meaningless without users, and those users that do go out of their way to file helpful bug reports sh

I would advise against calling users leeches. A product is meaningless without users, and those users that do go out of their way to file helpful bug reports should be lauded not disparaged. The phrase leeching implies an entity is consuming a host's life force in some way (seeders's bandwidth in the torrenting analogy), simply using the product does not meet this criteria.