In the example you use (cristianmd7 OP) you should put a large X or make it clear the wikipedia example is the villain. Also put your example (what you write) in a larger color.

I would also include an about page with a writeup of your qualifications to be doing this (as specific as you want to get w/o personal info if you don't want it there).

Finally I'd also offer a service that is not a newsletter basically an 'ask me' type where a non tech person can email questions and get short replies.