Jamster!, has started a Promotional offer for the US Market, offering a variety of Ringtones and Cell Phone Games. Registered Users get one free ringtone, to be chosen among a wide selection of Ringtones for the most popular cell phones available on the US-Market. The Company satisfy the demand for high-end Multimedia content for modern mobile phones, including the latest technology as Polyphonic Tones and animated screensavers. The product offer of Jamster! covers: o Polphonic Tones o Rea.