Harvard Library has lots of subscription materials you have to have affiliation to view, but our online catalog has always been freely available for anyone to look at. We just been notified that because it's getting hammered by bots and scrapers, starting next week non-signed-in users will only be able to see the first 250 results from a search. It's a pretty marginal restriction, but I hate that we've had to move in the direction of making the catalog less open to keep it functional.