0 the activity of using free bets from bookmakers (= people who accept and pay out money risked on the results of races, matches, etc.) in order to make a profit
Auto-matchers are usually used by individuals who have an understanding of matched betting.
Automatic websites or software packages are usually aimed at individuals with little or no experience in matched betting.
This means that matched betting individuals will know for sure how much profit they will make before the match starts.
The mathematics of matched betting means that the profit made is identical, regardless of result.