i still don't see your point. i mean, out of the words you have highlighted maybe you consider contractions as a
mistake which, are not. contractions might be considered informal language but not mistakes.
besides, what's wrong about using the word Skype?
well, anyways, all this issue you brought about out of the blue was sorta funny. thanks for the moment buddy
actually @sarasi proofreading was much more effective and straight to the point, thanks @sarasi. that was relevant.