One of the most cited reasons for YaCy is the freely configurable ranking system. The ranking settings have a major impact on the displayed search results, so it is worthwhile looking at them. For example searching for current news you might want to give pages with a more recent date a higher rank, whereas searching for a rare documentation other ranking factors are more helpful. As YaCy knows over 30 ranking factors, YaCy-UI will offer for the ease of use ranking pre-sets (most relevant, most popular, most recent) to choose from. Currently you can set the default ranking via the existing user interface.