An Extensive Guide To Web Form Usability
uxdesign.smashingmagazine.com
NOVEMBER 17, 2011
As Luke Wroblewski states in his book Web Form Design: Filling in the Blanks , every form exists for one of three main reasons: commerce, community or productivity. They can be positive (such as indicating that the form was submitted successfully) or negative (“The user name you have selected is already taken”).
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