This is on thing I admittedly have some difficulty with. You language you use will help you with things like creditably. If you sounds as though you know what you are taking about, you will be find. Also keeping in mind visitor do not want to listen to a robot. Speak as if you are talking to the reader not trying to sell them a car.

Your content should not be boring, yet you should have a little knowledge of your website and produces. People will see right through a shurid if you start using difficult or technical words they do not understand. Long word that will need explanation.

Using words like 100 megabits per second may be more than they want to read. However saying something like its super fast may just get them to stick around.

If possible, once you start to communicate with people in different parts of the world. You will notice differences in languages and phrases. Try not to correct them too much. This will drive them away. If you can speak in their native tongue then do it. If not, let them know your language and us thinks like the Google Translator to communitcate via email on withint WA.