Search log analysis, also known as search analytics, is a valuable and non-intrusive source of data for understanding the labels your site's audience actually uses.

Benefits of search log analysis include:

• User language: Search logs show the language and terms users naturally use. For instance, you might notice a preference for acronyms or simple terms, indicating whether to use technical jargon or layman's terms.
• Label length: If users often use short phrases in their searches, it suggests using concise labels. Conversely, longer search queries might indicate a need for more descriptive labels.
• Term variability: You might find that users use different terms than you expected. For example, if you run an online bookstore, search logs might show that users frequently search for "bestselling novels" rather than "popular books."

Using tools like Google Ads can provide further insights into popular search terms people use, which can help refine your labeling system.