How come? if you used the word expert in your service or application you should reflect that in your application or task, it should be unquestionable, that's a very bad marketing strategy he did not proofread his post so how can his client be sure that he will deliver a good service, he did not post a sample of his work, we can forgive this typo error if we can have a sample of his work that is good enough for him to claim that he is an expert.