Welcome back to Baby Breakerdom! This week's quest to uncover budding Rule Breakers finds there's big demand for on-demand and that Foolish investments sometimes come in tiny packages.

First up this week is SuccessFactors, which, like Salesforce.com (NYSE:CRM), provides software for managing business functions through a Web browser. SuccessFactors, however, specializes in human resources, while Salesforce.com has built a business around managing customer relationships.

On Monday, SuccessFactors announced that it had raised $45 million in funding from Greylock Partners, Canaan Capital, TPG Ventures, Cardinal Venture Capital, and Emergence Capital Partners. That's hardly surprising. "On-demand" software has developed a following for its simplicity. It's typically far easier to maintain than classic install-and-upgrade software of the variety traditionally offered by Microsoft (NASDAQ:MSFT), Oracle (NASDAQ:ORCL), and SAP (NYSE:SAP).

Of course, it's not yet clear whether the on-demand model will make a notable dent in the sales or profits of legacy software giants, especially since both Oracle and SAP have their own on-demand platforms. But VentureWire says that five firms dabbling in the technology received new rounds of funding this month alone. Call me crazy, but to me, that sounds like a movement.

Next up is nanotech. The small science has been attracting plenty of investor attention lately, and I'm not just talking about Motley Fool Rule Breakers pick Harris & Harris (NASDAQ:TINY), either. Witness OVP Venture Partners. VentureWire says the private equity firm recently raised a $207 million fund for multiple nanotech investments, including NanoString Technologies, which is attempting to place bar codes on molecules. Could more opportunities be emerging for regular Rule-Breaking investors? Certainly, there's room: There were only 77 nanotech firms among the 5,406 active venture-backed companies tracked in a recent report by Ernst & Young and Dow Jones VentureOne.

That's all for now. See you back here next Friday when we continue the quest to find the next ultimate growth stock.

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Fool contributor Tim Beyers owns shares of Oracle. You can find out what else is in his portfolio by checking Tim's Fool profile . The Motley Fool has an ironclad disclosure policy . Starbucks is an active Motley Fool Stock Advisor pick, and Microsoft and Wal-Mart are Motley Fool Inside Value picks.