Thats 400k*365 = 146 million per year extra in storage costs. Considering FB's market cap/market worth is 265 Billion with $13B in annual revenue and photos is

Thats 400k*365 = 146 million per year extra in storage costs. Considering FB's market cap/market worth is 265 Billion with $13B in annual revenue and photos is part of its core service, that amount of extra cost in negligible to their business. Not hard to increase those revenues by at least 3% annually which would bring another $400m a year, easily covering any extra storage costs from photos.