<P> Tipsters are often insiders of a particular sport able to provide bettors with information not publicly available . There are other tipsters who provide equally respectable results through analysis of commonly accessible information . </P> <P> Some tipsters use statistical based estimations about the outcome of a game, and compare this estimation with the bookmaker's odds . If there is a gap between the estimate odds and the bookmakers odds, the tipster is said to identify "value", and a person who bets on such odds when they perceive not a certainty but a "gap in the book" is said to be a "value bettor". When value is found, the tipster is recommending the bettor to place a bet . </P> <P> A tip that is considered to be a racing certainty, that is, almost completely certain to be true, is also called a nap and tipsters in newspapers will tend to indicate the "nap". </P> <P> Tipping is mostly associated with horse racing but can apply to any sport that has odds offered on it . The relaxed cultural attitude towards gambling in the UK is increasingly resulting in a gambling element being promoted alongside sport coverage in the media . </P>

What does the term nap mean in horse racing