We went with my son to his college orientation this past week. As part of the orientation we were given a tour of the campus. There were bike racks stationed at every building, some empty, others with several bikes locked up to them. It was obvious that many of these bikes had been abandoned and left to die a slow death. There was a Specialized Stumpjumper with ivy growing over it, no chain and severely rusted RD and cassette. Another was was resting belly up missing the rear wheel. Another odd sight was simply a front MTB wheel locked to the rack, the rest of the bike was missing.
It's a shame they don't do a sweep of the campus after the end of the school year and donate any abandoned bikes to organizations that refurb old bikes for charitiable groups.