IBM roundup: 1) Following solid 2012 growth and an M&A binge, IBM expects to generate $20B in analytics/big data revenue in 2015, up from a prior forecast of $16B, says CEO Ginni Rometty. 2) Rometty also talks up IBM's emerging markets efforts: Big Blue is on track to double Chinese sales from 2010-2015, and grew its South American client base by 22% last year. 3) An NYT column looks at IBM's efforts to expand Watson's uses. Potential applications include drug development, predicting machine maintenance, and inventing recipes. IBM recently added Watson to a server line that starts at ~$6K.