It was Herbert Simon who first talked of the attention economy: “Hence a wealth of information creates a poverty of attention and a need to allocate that attention efficiently among the overabundance of information sources that might consume it.” Now we see what the value of attention is. Ours is way below USD 11.86, but not zero and rising. What this means in dollars and cents for Facebook can be seen in numbers contained in its first-quarter financial results, released on Wednesday.