Traffic from G is down by 30% over this month. 20% from Knowledge Graph day and 10% from Panda.
I changed the site from being static width to fluid width (CSS changes only). I did that around Mid-May. Also moved the members section to a subdomain last week.
Other than that, I've just been adding content to pages which needed it.
Is it even possible that the fluid width change (was originally 990 width) would cause a Panda smack?
My main terms are still the same (although, none are #1 since they lost that ranking in January). It's the terms which usually get 1 or 2 hits which completely disappeared. That made up a big chunk of traffic.
[edited by: tedster at 1:48 pm (utc) on Jun 1, 2012]
Since we have several members reporting drops on Wednesday afternoon, and others reporting no drop, I think it is safe to conclude that some kind of change occurred. Also, for us, when the drop in google organic referrals occurred, our regular direct and othe traffic remained steady. This would not support something like the soccer tournament.