ShareFile, Which Grew to 175,000 Paid Users in Less Than Three Years, Will Share Formula for Building Profitable Online Subscription Business At MarketingSherpa Summit WARREN, R.I., April 30, 2008 (PRIME NEWSWIRE) -- Jesse Lipson, CEO and founder of ShareFile, which has 175,000 users in 120 countries and over 2,500 paid subscriber accounts, will share the concepts...