I would need to be paid to join FB again, and endure the continuous stream of snarky memes and gregarious selfies.

There is this very interesting stand-up comedian from India (Amit Tandon) on YouTube. According to him ever since Fb become mainstream, people are under a lot of pressure to enjoy their lives. He logs in every night even if it was just to find out which of his friends were happier than him that day :D

Beat me to the comment.

It would seem that anyone who does not use Facebook and values their product at $0 is unlikely to affect the valuation of the company.

Remember: "if you don't pay to use the product, you are the product."

If your "product" won't participate, especially when it's the relationships between products that are most valuable, your valuation is in trouble.