[JamieLewis]

As mentioned by vitovito your problem is most likely effective communication.

Take this post for example, there is very little structure, the main points are clouded by seques that don't lead anywhere, here is how I might have written it instead:

"Hi everyone,

I have been encountering a problem with several of my clients, both past and current. It seems they become intimidated whenever I start discussing anything vaguely technical e.g. Version control ala GitHub.

Have any of you come across a similar problem in your line of work?"

It might be worth taking a class or at least picking up a book on communication, presentation and debating which should cover many of the problems.

On a separate issue you posted an excerpt from an email. It seems t be that the client would not be requesting information on version control for a website (although that may be the case) - in my experience this is probably a query regarding content management in which a CMS would seemingly be a better fitting solution - this should be taken with caution as I do not know anything about this client and so could be completely off course.