When should you use navigation tabs?
Use tabs to alternate between views within the same context, not to navigate to different areas. This is the single most important point, because staying in place while alternating views is the reason we have tabs in the first place.
Is scrolling better than clicking?
Among the advantages of scrolling is the fact that is much faster than clicking. Another advantage is the fact that scrolling provides a better user experience on touch screen smart devices. Information websites and e-commerce websites are starting to adopt this navigation technique as well.