Pooja Sankar thought long and hard before making the decision to have a child.

FORBES: Mommy CEO: Pooja Sankar On Raising A Baby, A Business And A New School Of Role Models

The site, free student question and answer service Piazza, is the brainchild of former Facebook, Kosmix and Oracle engineer Pooja Sankar, who felt a need for students to be able to connect with each other around their classes.

FORBES: Piazza's Q-And-A Website Goes Back To School

Pooja Nath Sankar is the founder and CEO of Piazza it means town square in Italian.

FORBES: Stanford MBA's Virtual Square for Student Q&A