Thanks to Kate Bladow at Techno.la and ProBono.net for this additional info!
I-CAN!® E-File 2008 has REPORTS that allow us to see how many filings are completed out of each state. As of this writing 36 South Carolinians had completed their returns using I-CAN!® E-File 2008 for refunds totalling $54,492 and Earned Income Credits (EIC) totalling $18,219.
If you are unfamiliar with the term EIC, you can learn more here. In order to qualify for EIC, taxpayers MUST file a tax return, even if they did not earn enough money to be obligated to file a tax return.