There are a number of factors that potential new clients take into account when choosing an Online sports betting site. Bonuses and free bets could be what sway people into choosing one site over another and these all very differently.
Offering bonuses to people can dramatically sway then into placing their custom through your site, this can also boost the winnings for the client as well if first time bonuses are offered for new client placing bets.
Online sports betting sites are battling with other sites and competitors to offer potential new customers a reason to choose their sites over another. There is plenty of choice available wherever you choose to place your custom.