6. The method of claim 5 wherein the social networking system is selected from a group consisting of an instant messaging (IM) system, a short message services (SMS) system, a blog-based system, a website, a social media community system, a news feed system, an email system, and a voice-over IP (VoIP) system.
5. The method of claim 1 wherein the document is a message intended to be sent to one or more recipients in a social networking system, the method further comprising: receiving the document from the visually impaired user; applying one or more natural language processing (NLP) techniques to derive the sensitivity of the document; marking one or more areas of the document with one or more document tags that indicate the derived sensitivity of the corresponding areas; retrieving the vocal characteristic corresponding to the derived sensitivity and a second vocal characteristic corresponding to non-sensitive areas of the document; and wherein the audibly reading of the text includes reading the areas marked with the document tags with the vocal characteristics that correspond to the derived sensitivity, and reading the areas not marked with the document tags with the second vocal characteristics.