Complex sentence: Anatomy of a Ghost formed early in 2002 and won fans through strong live performances and through internet promotional channels; in 2003 they toured the United States with Saosin and Boys Night Out.
Split into simpler sentences: Anatomy of a Ghost formed early in 2002 and gained popularity through live performances and through internet promotional channels. In 2003 they toured the United States with Saosin and Boys Night Out.