Believe it or not, a heavy short interest and the words "online gambling" can fuel a big rally...

|By:, SA News Editor

Believe it or not, a heavy short interest and the words "online gambling" can fuel a big rally in a small-cap stock. Glu Mobile (GLUU +11.5%) is soaring today on volume that's already over 3x its daily average, and is now up 34% since it announced plans to launch a mobile slot game in partnership with U.K. online gambling firm Probability. 23.1% of the float was shorted as of Feb. 28.