Company Files Antitrust Claims Against Craigslist

3Taps, a company that collects public data and organizes it for developers to use, filed an antitrust claim against Craigslist, accusing the company of anticompetitive business practices. The lawsuit, which was filed in Federal District Court for Northern California in San Francisco, is a response to Craigslist's lawsuit in July that accused 3Taps and Padmapper, a listings Web site, of infringing on Craigslist's copyright and trademark.