I sort of guessed the response to this post. It all depends on whether your answer is correct for 'adding to our knowledge'.The fact that amateurs routinely find novae, comets and asteroids does not in itself add to knowledge. The LINEAR project simply confirms the view that there are a great many comets out there. As for asteroids, it has come of no surprise that with concerted effort we will go on discovering them for many years to come. The celebrated novae discoverer Alcock of England always maintained that with good equipment and more observation many more would be found.With todays equipment I find these kind of statistics predictable.