I once did a technical review for one of those small O'Reilly books (the German ones went for 10-15 EUR) - it was a lot of fun. I was paid in store credit, not cash, but it was a good deal because I did it mostly for the experience and then enjoyed some reading material. Sadly I've no clue how much the author made and if it was worth it financially. That said, just the thought of having to write a book makes me want…
How did you get on board as a technical reviewer? That seems really interesting.
One of the folks at the publisher was looking via Twitter. As I tried to convey, it was a small reference book - not the new "bible of ".
After the fact I learned that a former co-worker (sitting next to me) had been the technical reviewer for the first edition, that gave me a good chuckle as well.