cell phones, Diffuse reference, digital reference, evaluation, mobile devices, mobile libraries, mobile library services, mobile reference, mobile virtual reference, Mosio Reference, reference2.0, Review, SMS, SMS reference, text a librarian, text message, Text message reference, text message services, Text messaging, Text messaging reference, Text messaging reference service, Texting, The Charleston Advisor, Txt a librarian, Txt msg ref, Txt msg reference, virtual reference