Sites where “protocol” is a top search keyword

One site on record lists “protocol” among the searches that send it the most visitors, by traffic estimates. It is searched about 46.9K times a month, at about $2.38 a click in search ads. Each site checked on the backlink value checker adds its top five search keywords, so this list grows as sites are checked.

Listed A–Z. A top search keyword is one of the searches that bring a site the most visitors, by estimate. It is not a position in Google, and the order here is not a ranking. Traffic value: what the keyword's visits to that site would cost as search ads, per month. This page is kept out of search results until 15 sites share the keyword.

Keyword data from third-party traffic estimates, Aug 2026.