Free tool to generate comprehensive keyword variations from a small number of source keywords, for use in PPC (pay per click) campaigns such as in Google Adwords. Using Free PPC Keyword Expansion you can fully take advantage of the long tail of search, resulting in a cheaper cost per click across your whole account. Advanced features include CSV import and export, the ability to set keyword lists as optional, the ability to generate keywords in any order, and a Google-friendly export.