Comparing the odds gives you another interesting option - a sure bet called also an arbitrage bet. If you know exactly what this definition means and you need no additional information about sure bets you will probably would like to look at free sure bets list.
And briefly: playing sure bets is probably the only way to get a real chance to win against bookmakers.

View an example of Sure Bets!

Sure Bets Finder:   All - Today - Tomorrow - Next 3 Hours - Next 12 Hours - Top

Germany Bundesliga
2013-12-07 14:30:00	1	2	Prof. %
Werder Bremen - FC Bayern Munich	1.69	3.05	8.74

Europe UEFA Champions League
2013-12-10 19:45:00	1	2	Prof. %
Manchester United - Shakhtar Donetsk	1.52	3.75	8.06

Argentina Primera Division
2013-12-08 20:00:00	DNB1	DNB2	Prof. %
Estudiantes - Tigre	1.63	3.00	5.62

Europe UEFA Europa League
2013-12-12 20:05:00	1	X	2	Pr %
Real Betis - HNK Rijeka	1.50	5.50	9.20	4.47

Denmark SAS Ligaen
2013-12-07 16:00:00	Over	Under	Prof. %
FC Copenhagen - FC Vestsjælland	6.35	1.25	4.44

England Championship
2013-12-07 15:00:00	DNB1	X	2	Pr %
Bolton Wanderers - Doncaster Rovers	1.33	4.30	6.71	4.32

Argentina Primera Division
2013-12-09 23:10:00	1	X	DNB2	Pr %
Olimpo Bahia Blanca - Colon de Santa Fe	2.00	3.55	3.90	3.53

Europe UEFA Europa League
2013-12-12 18:00:00	1	2	Prof. %
Valencia CF - Kuban Krasnodar	2.50	1.76	3.29

Italy Serie B
2013-12-07 14:00:00	DNB1	X	2	Pr %
Brescia Calcio - Reggina Calcio	1.36	3.60	6.25	3.22

Spain Primera Division
2013-12-15 20:00:00	1	2	Prof. %
Atletico Madrid - Valencia CF	1.81	2.40	3.18

The technique also known as sports arbitrage or Sure Bets is a great way to earn without losing sports betting, it all depends on your budget.

Logically, on a limited budget of 100 euros and a SureBets with 3% profit, the gain is relatively low, so you should be able to invest a greater sum of money to see increased investment faster.

We also have a list of the best bookmakers, that having more shares than others, where there are often Sure Bets.

So, having said that, needless to say good luck, since it is no longer to win a bet, but you will start to talk about a real job.