If you’re a brand using social media to raise awareness of your products and services, build an engaged community of fans and customers, and drive footfall to your website, you really need to be updating all of your channels at least once per day, every day.
But not all social networks are created equally.
Studies have shown that Facebook, for example, works best if you post twice per day. After that, Likes and comments begin to drop off.
Three tweets per day seems optimal on Twitter, and about the same number of posts is ideal on Google+.
Meanwhile, the top brands on Pinterest have seen rapid growth by posting multiple times per day.