Bio, via LinkedIn:

vCalc is building the world’s premier calculating system for the web and mobile devices. It let's people who understand how math solves everyday problems to create free online calculators. Through the power of crowd-sourcing, vCalc.com contains the world’s fastest growing library of equations, data and collections. vCalc empowers users to create “Your Math” with the tools to develop and share equations and data, and the ability to publish data using wikis and web-enabled calculators by using any combination of equations from vCalc’s global community and social network. vCalc is used by the public and in universities in over a hundred countries, where users can create, collaborate and calculate information to build the world’s greatest utility for the math used in our lives. Academia, Industries and Hobbies: vCalc is a place where you can find equations that others have entered and shared to make calculating easier on you. These equations range in academia from elementary to graduate level college. These equations also include a growing number of industries including: Medicine, Engineering, Construction, Agriculture, Manufacturing and many more. The equation libraries also include a growing number of hobbies from gaming to quilting to DIY pastimes. vCalc is free to all users and we make this possible with modest advertising. Many parts of vCalc are very easy, but some areas do get complicated. YouTube has dozens of "how-to" videos that you can also see in vCalc's forums.