Here are the general guidelines:
Facebook: Videos and curated content
Instagram: High-res photos, quotes, Stories
Twitter: News, blog posts, and GIFs
LinkedIn: Jobs, company news, and professional content
Pinterest: Infographics and step-by-step photo guides
Google+: Blog posts that you want to rank on Google
參考來源如下:
https://blog.bufferapp.com/what-to-post-on-each-social-media-platform