Which tool is primarily used for conducting keyword research in SEO?

LongTailPro is primarily designed for conducting keyword research in SEO. This tool specializes in helping users find long-tail keywords, which are less competitive and often more specific search terms that can drive targeted traffic to a website. It provides metrics such as keyword competitiveness, search volume, and potential profitability, making it a valuable resource for SEO strategists looking to optimize their content effectively.

In contrast, Google Analytics is focused on tracking website performance and user behavior rather than keyword research. The Meta Tag Analyzer evaluates the elements of a webpage's meta tags but does not provide tools for discovering or analyzing keywords. Buzzsumo is great for content research and finding popular topics but does not specialize in keyword analysis. Therefore, LongTailPro stands out as the appropriate tool for keyword research in SEO.