LI Text
The <li> tag defines a list item. The <li> tag is used in both ordered <ol> and unordered <ul> lists. Many websites uses lists for things like navigation, site maps, link lists, sidebars and galleries.
The list items within a list will most likely carry the same styles such as color, font and background. They belong 'together' visually.
Why does Google care about LI text ?
One reason is LI information is sometimes displayed under the title in Google search results. Getting the special display could help improve the Click Through Ratio.
If a search result consists mostly of a structured list, like a table or series of <li> tags, Google will show a list of relevant rows or items underneath the result in a bulleted format. The snippet will also show an approximate count of the total number of rows or items on the page.
If the same list items appear on multiple pages on a site, they are likely to be part of the main navigation or template. From an SEO point of view, it would make sense to put keywords in non-navigation lists to ensure maximum exposure in the search results.
Example listing:
