I keep mine at 100 but even that is a bit much sometimes, especially when I'm browsing lists of plants in the database. 100 images at a time is a bit much.
Anyway, our server is supposed to handle that kind of load without any problems, and usually it does. I hope my provider is able to keep up with the villains who are trying to disrupt connectivity for the thousands of people who keep servers in this particular data center in Dallas.
(And BTW, this DDOS problem plagues every data center.)