“As arbitrators of checkout, registration, and data entry, forms are often the linchpins of successful Web applications. But successful Web applications tend to grow—both in terms of capability and complexity. And this increasing complexity is often passed on to and absorbed by a Web application’s forms. In addition to needing more input fields, labels, and Help text, forms with a growing number of options may also require selection-dependent inputs.” (Luke Wroblewski – UXmatters)