Sponsta: Sponsta helps influential instagrammers partner with brands on their own terms

With over 300 million users and 70 million photos shared daily, Instagram is an invaluable platform for advertisers. Brands don't always have the same influence popular instagrammers do though, so they'll look into partnering with them to reach wider audiences. Sponsta wants to make this connection easier. Unlike ad agencies, Sponsta doesn't act like the middle man or arbiter - it simply enables interested parties to communicate directly. The tool launched in beta form two weeks ago and currently has about 300 popular accounts signed up, together amounting to about 4.6 million followers. There's a vetting process for each applicant; only…This story continues at The Next Web