Thanks Stanton. I prefer to distribute contributions to sites worth a hoot. This is one of them.
On Wikipedia, if you for instance are going out to Mauritania and want to have a clue about the society, castes, racial antagonism, tribal breakdown, etc., you can't find diddly in English in books. But start with "Sufi" and continue and pretty soon you'll have a more complete understanding of that society than you could find perusing a library for 50 years.
This site is the same. Ask a technical question it will be answered. These are the types of engineering, fact based sites that are worth supporting..more so unfortunately than subscribing to most of our current legacy media.