In 1998 Steve Sheraton invented e-presso for Palm Pilot. It turned your personal digital assistant (yep, that what they were called) into a virtual cup of coffee. It took the trick 10 years to find its success as "iBeer" for iPhone where it topped iTunes charts for 2 years in a row. iBeer now has 90 Million users and Sheraton's decade-long patience seems to have paid off quite well...