Previously, we did all the keyword collection work using KeyCollector, Wordstat, and Google's Keyword Planner. Later, we learned about the emergence of Keys.so, which offers clustering of queries based on various scenarios: one cluster combines queries for which similar pages are promoted. For example, if at least one of the same pages appears for the queries "buy things," "things in Izhevsk," and "things cheap in Izhevsk," these queries can be grouped into a cluster. Clustering can be soft (1 page) or hard (more than 1 page, usually from 3). This feature turned out to be very useful for our agency, as clustering takes a lot of time, and automating this process would be quite helpful. However, in practice, clustering doesn't always work perfectly, and refinements are still needed. Overall, the tool is quite good, especially if you don't focus solely on clustering.