What was once the home to one of the world’s oldest chiropractic directory websites, planetc1.com, has been acquired by the owners of planetchiropractic.com. Appearing in search archives as early as January of 1999, planetc1.com served as a massive listing database of chiropractors across the planet. It existed until around April of 2007, and had provided search results to those seeking chiropractors, with more than 55,000 local listings of doctors of chiropractic.