SMS Reference
http://liswiki.org/wiki/SMS_reference

A form of virtual reference (or digital reference) in which users can send questions on their cellphones via SMS (also known as text messaging). List of libraries using Mosio’s Text a Librarian for SMS Reference. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This has been added to eReference Resources Subject Tracer™ Information Blog. This has been added to Internet Experts Subject Tracer™ Information Blog. This will be added to AnswerSpot Subject Tracer™.