Why was there a big drop in a lot of my rankings today
-
Yup, the drop started on the 24th. Darn you Penguins!
-
Is your site anything likes these examples,(Penguin) http://googlewebmastercentral.blogspot.com.au/2012/04/another-step-to-reward-high-quality.html
Then fix it up and youy should see something of a return
-
Seek out what could have caused it. And try to resolve it as soon as possible.

-
my site is http://thestockmarketwatch.com/ I'm sure I have some areas where some keywords repeat a lot, but nothing blatant.
-
Hi Terry,
you are not alone... we are also affected:
http://www.seomoz.org/q/lost-50-google-traffic-in-one-day-panic
Best wishes,
Georg.
-
Hi Georg,
I'm about to start making t-shirts, "Kill the Penguin"

Terry
-
Instead I would invest in resolving the issue

-
I would buy one 
-
Careful, there might be people around from the Green Peace Organization

-
lol, good point. : adds fine print 'no real penguin harmed while making this t-shirt' :
-
Ok this way send one to Romania

-