We should work on the friends page HTTP headers so people don't have to do an explicit reload, which in turn does explicit image reloads.
In the past it was desirable to make the HTTP headers say, "Fuck off, don't bug me for a while.", when the web/dbs were slow, but not anymore. Now the backend is so fast, we should focus on doing more work on the backend side so that images are loaded 302 (not modified) more often than 200 (OK) and we'd pay less in bandwidth.