Quick Navigation Panel
This plugin helps the visitors to navigate more quickly. It shows the panel on the bottom of the screen where the following blocks are placed - pages, categories, archive, authors, tags, search field, depends on the choice. So the visitors haven't to scroll up and down to find where the pages of the website are placed or where the list of categories of the website is placed and so on.
Take care of the visitors' time, as time is too expensive.