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If you're looking to get better engagement out of your Facebook posts, add more pictures and start speaking in the first person.
You already know that twitter posts have the shortest lifespan of any social media; then Facebook at an average of about 3 hours on a news feed. Here is an interesting and relevant case for blogging. I would add videos, too. The content from both of these marketing strategies can be out there for months, even years - in perpetuity, in fact. What do you think?