To effectively cross-promote your blog posts, you can’t simply broadcast the same message on each social network; you need to tailor your message to fit each platform and audience.
For example, if you’re promoting a new blog post, you may need to address your Facebook friends in a different way than your business contacts on LinkedIn. On Twitter, you’re restricted to 140 characters, so you have to keep your message short and simple. On Pinterest, your image is the primary way to draw attention.
Each social network offers different options for promoting your content. The number of characters allowed differs and image sizes vary. You might add hashtags to turn posts into searchable content or add @ handles to connect directly with your followers.