Most Powerful Women Entrepreneurs alumnae: Where are they now? by Claire Zillman @FortuneMagazine 9:21 AM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons For each of the past six years Fortune has welcomed a new generation of 10 entrepreneurs into its community of Most Powerful Women. Choose the buzzword—groundbreaking, innovative, game changing: These business leaders define it. On the fifth anniversary of the first MPW Entrepreneurs list, Fortune caught up with some of the e-commerce gurus, nonprofit founders, and mathematicians—to name a few—who have captured this honor while on their quest to create the next great company; and as all great entrepreneurs do, some have struggled to build on their success. Here’s what they’ve learned.