Interface
This rates how easy to use and pleasant to look at the company's website and software is.
Events
This reflects the depth (number of different bets on each event) and breadth (number of different events) of the sportsbook's coverage.
Cashier
This is a rating of how quickly the sportsbook processes
withdrawal requests, how quick and helpful their support services are.
Promos
The more frequent and better the site's promotions are (free bets, bonuses, tipping competitions, etc) the higher score they should get here.