Permig

While researching SEO/SEM, I discovered a lot of phrases like "the 1% of the 1%...". Percent might be a useful metric for things measured in 3 or 4 orders of magnitude, but we need equivalents across the spectrum for each degree of thousands. That is, an expression for each division of thousands, millions, billions, etc.

I propose the expressions permig and perbin to indicate 1 per million and billion, respectively. These are not presently english words, but in the context of expressing small portions of large numbers should be easily spelled, spoken, and understood.

As is always the case, I expect that there is some well-established standard among members of industries or institutions of which I have not been made previously aware. Feel free to bone with proper profferance of education.