After exceeding that limit users then pay $10 a month for up to 50Gb and $20 a month for 100Gb in storage.Others to invest in the company are Goldman Sachs, Greylock Partners, Benchmark Capital, Institutional Venture Partners, RIT Capital Partners and Valiant Capital Partners.Bono's firm, Elevation Partners, has invested heavily in the tech sector with concerns in Palm, Yelp and Facebook. by RTT S