Behind Ning’s $750 million play

Updated: Jul 23, 2009 7:55 PM UTC

Ning CEO Gina Bianchini is getting lots of curious looks and occasional “Congratulations!” at Fortune's Brainstorm Tech. The news leaked this week that her start-up raised $15 million at a company valuation of $750 million.

You can read the whole story here in Pattie Sellers' Postcards column.