the former owner of this site used to advocate this system and it is worthwhile bringing this to your attention because it is profitable if followed, and this time of year brings about most selections 
You back the following scores for any team that is priced 1.20 or less (Rangers were a qualifier today)
1-0, 2-0, 3-0, 4-0, 5-0, 6-0
What in fact you are backing is their opponents failing to score and Rangers not scoring more than 6, which was a winner today as they won 2-0.
The odds that you may get for the scores are ...
1-0 / 7'1
2-0 / 6'1
3-0 / 7'1
4-0 / 10'1
5-0 / 20'1
6-0 / 40'1
By backing these outcomes you will have turned the 1.20 into a 1.80 pick with a little chance of failure should they fail to win or concede a goal, But this does not happen as much as you might think.
Using Ladbrokes (William Hill for some leagues) Odds and the tables at Football Data you would have managed the following results so far this year
England Premier 6 Bets 2 Wins - LOSS
Scottish Premier 26 Bets 16 Wins - PROFIT
Germany 1 Bet 0 Wins - LOSS
Italy 5 Bets 2 Wins - LOSS
Spain 1 Bet 0 Wins - LOSS
Netherlands 9 Bets 5 Wins - PROFIT
Belgium 11 Bets 7 Wins - PROFIT
Portugal 11 Bets 5 Wins - PROFIT
Turkey 12 Bets 6 Wins - LOSS
Greece 28 Bets 16 Wins - PROFIT
This backs up my suspicion in those leagues where a couple of teams stand head and shoulders above their opposition and constantly go off at short prices like Rangers and Celtic in Scotland you get more bets and more favourable results.
Food for thought 