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

Volleyball | Austria | AVL
2013-12-13 19:15:00	1	2	Prof. %
UVC Holding Graz - TSV Hartberg Volleyball	1.8	3.35	17.0874

Soccer | Germany | Bundesliga 1
2013-12-14 14:30:00	> 2,5	< 2,5	Prof. %
Bayern Munich - Hamburger SV	1.4	4.75	8.13008

Germany Bundesliga
2013-12-14 14:30:00	Over	Under	Prof. %
FC Bayern Munich - Hamburger SV	1.40	4.75	8.13

Soccer | World | World Cup 2014 - Group D
2014-06-20 16:00:00	1	X	2	Pr %
Italy - Costa Rica	1.38	6.5	17	6.68859

Europe BeNe Women
2013-12-13 19:30:00	1	2	Prof. %
Lierse (W) - Telstar (W)	3.42	1.55	6.66

Soccer | World | World Cup 2014 - Group A
2014-06-18 19:00:00	1	X	2	Pr %
Cameroon - Croatia	5	3.4	2.25	6.54596

Brazil ITF-M Brazil
2013-12-13 18:30:00	1	2	Prof. %
Nicolas Kicker - Orlando Luz	1.45	4.00	6.42

Turkey TFF 1. League
2013-12-14 17:00:00	AH1(0)	X	2	Pr %
Fethiyespor - Adana Demirspor	2.70	3.50	2.56	6.28

Soccer | World | World Cup 2014 - Group E
2014-06-25 20:00:00	1	X	2	Pr %
Ecuador - France	4.75	3.6	2.2	6.06146

Soccer | World | World Cup 2014 - Group G
2014-06-22 19:00:00	1	X	2	Pr %
USA - Portugal	6.3	4.33	1.8	5.79406

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.