Sustainable as in "I can make a career of this" or "if this particular project wanes, I can always hop over to one of the many other projects."
If you pad your listings, people will assume you need to because there _aren't_ many such jobs. Moreso over time as the ratio of filled listings to active recruitment grows -- if all visitors ever see are jobs that no longer accept applications, they will not come away with a positive outlook on the field.
If you pad your listings, people will assume you need to because there _aren't_ many such jobs. Moreso over time as the ratio of filled listings to active recruitment grows -- if all visitors ever see are jobs that no longer accept applications, they will not come away with a positive outlook on the field.