Hmm, well for those who do not know what is arbitrage it simply means taking advantage of price differences especially in sports betting so that you can take profit from the different odds by different bookmakers online. I have subscribed to the service of Talkmoneyonline and can say they do provide good arbs alert. Currently they send their arbs by email so members just need to check their email for the arbitrage available.
I recommend $500 minimum really if you want to take up this arbitrage business. It is very safe but you must be careful of certain criterias of bookmakers in tennis games and boxing(eg players retire) so that you do not make the wrong arbitrage bets. Profit is almost guaranteed but take note that this is not just some get rich scheme but you do earn. The more you put in the more you earn. Here's the link to subscribe to Talkmoneyonline(arb alert service): Talkmoneyonline
However, do read up a bit on this topic you can do a google on it and actually this is not something new...