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?
The Facebook Effect on Relationships: "Facebook and romantic relationships make for a potent — and potentially volatile — combination. While the network does offer opportunities for meaningful social interactions and self-esteem boosts, it also opens a Pandora’s box of options for spying, stalking and other insecurity- and jealousy-driven actions between lovers. And all those public relationship tidbits of data..." / May 31 '12
Edgerank Algorithm Will Help You Trend On Facebook [Infographic] -“Edgerank is the algorithm used by Facebook to determine where and what posts appear in each individual user’s news feed. The three variables that make up this algorithm are affinity, weight and time decay.“ PostPocket