"Web Scale"

I agree with Zed Shaw here -- both "web scale" and your definition are not very good. "Web scale" is especially bad because it can mean anything and be used by anybody.

However, your definition doesn't really make sense either. Exactly what is being scaled here? Static web hits? Database lookups? Database writes? What characterizes your ability to scale? Sharding? Distributed processing or retrieval a la MapReduce? Instead of describing what you think your architecture can handle, why not try describing exactly what your architecture can handle. If someone is actually trying to convince me that their architecture is a good one I don't ever want to hear "web scale," I want to see graphs and hear means, medians, standard deviations, and confidence intervals.

Reed's law follows from the fact that a set has 2^N possible subset. So it's a statement about how group membership affects the dynamics of a social network.

There are O(N^2) possible connections, which is related to Metcalfe's law.

Your web scale number is the Levenshtein distance between your company's operations and Google.

To me, "web scale" means "We can consume, store, organize, process, transform, and deliver information for the entire world." Web scale is planet scale information technology.