[Lee Gordon]

I am in total agreement with Joe's list. However, due to the nature of on-line auditioning, it is virtually impossible to check with anyone prior to turning in a demo. Some of the leads I see from Voice123 and Voices-dot-com appear to have been written by people for whom English is not their primary language, or by people whose writing skills are so weak, they just seem to be non-native speakers. When I encounter typos or glaring grammatical errors I will generally fix them in the demo.
If it's an actual job and I do have the opportunity to communicate with the client, I will generally ask about anything I doubt is correct, or, if I don't have a chance to discuss it, I will record it their way and give them an "alternate" version along with an explanation of why I did so.