[subrat_rout]

I have not much idea about companies or startups offering backup service for contacts. But you will need to do few things before jumping into the project. 1. If you are targeting consumers(users) then I believe most of us has around or less than 500 contacts. So you wont be able to get a good number of paying customers. 2. If you are targeting companies and business then it is a whole lot different ball game. And I think there must be few players in the market. What is the unique that your product will provide to them. You have to be very clear about that.