Advertising, marketing and promoting company uSocial (usocial.net) said it was targeting social networking sites because of their huge advertising potential.
"Facebook is an extremely effective marketing tool," Leon Hill, uSocial CEO, said in a statement.
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Note: Similar things happen with twitter some times ago and it was also in news for some times that the companies are also using twitter for their marketing and promotion and for that also they used to buy followers.