Sramana Mitra posts an interesting interview with Paul Asel, Principal Investment Officer at International Financial Corporation: 

Like most investors, I look for entrepreneurs who eat nails for breakfast, have deep domain experience in their target market, and have a track record of success. I care a lot about entrepreneurial integrity and a commitment to continuous learning. I invest in people more than a plan. Our companies compete in volatile, uncertain markets. Integrity and adaptability are essential traits to sustain an entrepreneur along the bumpy, winding path to success.