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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?
Consejos para mejorar tu presencia en Twitter, Facebook y Pinterest
Consejos para mejorar tu presencia en Twitter, Facebook y Pinterest « Lecturas de Marketing en Internet