I support Buzzsaw and his site, and feel it helps players get paid which is very important.
It appears there are 5 different ranks -- RUN list, black list, recommended list, considered for recommended list, and none of the above (which is just below considered for recommended list). Then he has an A+ to F scale of financial stability for the the recommended list.
If it were my site, I would give EVERY BOOK a rating for:
1. STABILITY & HONESTY (i.e. will you get paid in full and promptly, will they cancel/change a bet after it is placed or use other fraudulent tactics)
2. VALUE (discount juice, sign up/referral/reload bonuses, large selection of bets such as props)
3. WEB SITE (reliability, ease of use, speed)
4. PHONE & CUSTOMER SERVICE (friendliness, problem solving, clear English)
5. LIMITS & TOLERANCE (do they accept winners/sharps and accomodate large bets)
6. An OVERALL score that combines all these factors (numeric scale such as 1-100).
Revere14