It actually depends on your intention. If you're promoting a product, then you could post as often as everyday to increase the popularity of the product. If you want to share your philosophy to enlighten others you may as well post as often as everyday. Social media is a place where people could easily reach out with other people, but always keep in mind that not everything should be posted. You can say that everyone has the freedom of speech. Yes, that's very true. But, the fact that social media is an open place for everyone registered, you have to be careful. Personal matters that could compromise your and your family's security should not be published. Rant's that could cause defamation as well should not be posted. I know that we all love our freedom of speech, but we should also consider the consequences of our actions. Remember, what has been seen cannot be unseen.