Quem te lisonjeia é teu inimigo, e quem te critica é o teu mestre.
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When designing a website, the most important thing is to make it as usable and convenient as possible. On a website on which users could possibly get confused, it is best to include help elements. Help elements come in all different shapes and sizes: an entire page, a suggestion box or a quick tip. But they all have one thing in common: besides doing the obvious (i.e. helping the user), help elements provide an extra convenience that brings the website closer to that sought-after usability.
With the number of forms, search functions and other navigational elements on websites these days, using them can occasionally become confusing for some users. Providing help elements in as many places as possible can be a great way to make the user's experience more pleasurable. The better the experience of the user, the more likely the user will buy your product, come back to the website and fulfill the goal that the website was built to achieve.