Yes, eRank is considered a legitimate and safe tool for Etsy sellers. It has been in operation since 2016 and has earned a reputation as one of the most popular Etsy SEO tools. eRank provides essential data that can be used to evaluate and direct a successful virtual business. It helps Etsy sellers optimize their listings with relevant search terms, check their competition, monitor their own products, and learn Etsy search tricks. The eRank team follows best practices and works closely with Etsy to ensure their products are always up-to-date and compatible with Etsy's latest requirements. However, the effectiveness of eRank may vary depending on individual usage and the specific needs of the Etsy shop.