Usability is one of Scribd's biggest selling points, which might resonate more with PC users long tired of Reader's unstability. Technically PDF as a format mi

Usability is one of Scribd's biggest selling points, which might resonate more with PC users long tired of Reader's unstability. Technically PDF as a format might rock, but most users just care about how their experience is. People's idea of PDF is attached to their experience with Acrobat Reader.