it does replace it,
but you have to hard-reload (ctrl-shift-R in firefox) to see the replaced image on /board; otherwise it loads the version stored in the cache.
(
polished turd 404 pixels wide,
Fri 16 Mar 2012, 20:53,
archived)
Other browsers are available:
CTRL-F5 in Chrome
(
Shlvng,
Fri 16 Mar 2012, 20:58,
archived)