When it comes to just about everything else, including in the wild world of social media, there’s virtually no such thing as one fits all. Your Facebook is a different creature from, let’s say, your Twitter account and hence, requires a distinct treatment.
Creating content for your Pinterest profile is totally different from what you needed to do for your LinkedIn, and etc. Of course, it’s totally possible and acceptable that you can use the same content, but you just need to tweak the copy to suit a particular platform.
The infographic below is a wonderful cheat sheet to help you get started writing for your different social media accounts.