PURPOSE: A win-win site E-business model is provided to secure many members of electronic commerce companies as a portal site, a special portal site, and E-mail company by supplying a bonus to each member through a lottery. CONSTITUTION: An environment induces users to contact to a site by supplying a predetermined bonus to each member. For example, the bonus is supplied to one hundred persons, two hundred persons, or three hundred persons. The amount of the bonus is hundreds of thousands won. The bonus is supplied per one month, every other month, or every three month.
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