Did you get a chance to check out the Facebook Infographic from Dan Zarrella? I found the most surprising data was on how often to post to a Facebook page.
As pages posted more than once a day they tended to have fewer likes, especially once they got past a 3 posts per day level.
So the answer to how often you should post to your Facebook page appears to be every other day for maximum benefits.
So what do you find works for you? How often do you post on your FB page and what results do you see?