Waldo,..i do agree that we both love bitcoin but I disagree with your assessment of the bitcoin books.
What bitcoin books failed? Annonibet just paid out $40k worth of bitcoins and the thread where person waited a few days to get paid out is on bitcointalk.
Btcsportsbet is terrible imo. Very vanilla lines, very minimal lines to bet on--no parlays, no reduced juice & min bet is .5 BTC. I have quit wagering at btcsportsbet due to bit365 (renamed bitcoinsports) and blockbet and bitbook.
I think your concern about bitcoin books being very new and susceptible to failing is a good point. However, you do not mention that the new bitcoin books have limited the max wager size you can place per bet. The new books are really aware of money management and are trying to limit their damage. Bit365's max wager is 1.5 BTC.
Blockbet's max wager is 10 BTC and Bitbook's max wager is 5 BTC.
Finally, anonibet which has been around as long as btcsportsbet is the only one who had a slow pay issue. It took them 2-3 days to pay out $40,000 worth of BTC. The other books have had no issues with slowpay.
PS. you know its good for bitcoin when we are arguing over which bitcoin books are the best to use