Ark is a personal search engine that uses filters such as hometown, current city, high school, college, gender, relationship status, employee, and interests, to search for new people, old classmates, old friends or acquaintances, and new business contacts. Features include managing users' inboxes from their mobile devices, and syncing data from their Yahoo, Aol, Gmail or Google Apps email accounts, while also finding information about whom they are communicating with. The service aggregates "ghost profiles" from social media outlets such as Facebook, LinkedIn, and .