SpyFu Kombat has been one of our most popular features since we launched it more than 10 years ago. Using a domain’s closest competitors, we compare the keywords that both (or all 3) domains bid on (or rank for) as well as the keywords that the other domains don’t compete for. These shared keywords (and the exclusive keywords) help you decide which keywords are considered to be the “must have” terms in the niche as well as those that you’re better off avoiding.