Er...you mean for the general public? I support seeking image donations for historical topics or specific holes in our coverage, but I don't know that we need more general amatuer my-dog-in-my-backyard,sunset-over-my-fence,my-street-my-school-my-car whatever photos. It seems to me the vetting system would have to discard 90% of what they were offered, so I rather question if it would be a worthwhile exercise.
I would think there could be some large university collections, etc. that would be well worth making an effort to acquire (not that that's the right word). I think a strategy to go after some of these extensive collections would be well worth the effort.
Kevin