there is
As far as pixel size goes there is no real limit, but you will rarely need to make your image larger than 400 pixels wide. To be put on the frontpage, your image needs to be no wider than 280 pixels.
(k3b/-\b Peace man., Thu 7 Aug 2008, 11:33, archived)

you know what to do!!!

GO GO GO!!!
( prodigy69 that shit is bananas, Thu 7 Aug 2008, 11:36, archived)

oh! doc dys!
I'll tell her (him) later
(k3b/-\b Peace man., Thu 7 Aug 2008, 11:52, archived)

doen't that mean
that it's alright in the rare occasion you need to post an image larger than 400px, say of a modified screenshot?
(Your watch is still saving for 5K but has learnt about 'nose bondage', Thu 7 Aug 2008, 11:57, archived)