Tényleg VÉGZETES HIBA, ha állásra jelentkezésnél nem tudom, hogy kit szólítok meg?

A "10 végzetes hiba" angol cikk: top 2:

"2. Failing to address the letter to the specific name of the recipient. Addressing the letter to "Dear Personnel Director/HR Director," "To Whom It May Concern," "Dear Sir or Madam" (or worse, "Dear Sirs") instead of a named individual are all lazy approaches that show the employer that you were not concerned enough to find out the name of the person with the hiring power. It's not always easy to find the name of the specific hiring manager, but try to do so if at all possible. Usually, you can just call the company and ask who the hiring manager is for a given position. Tap into your personal network to learn the names of hiring managers. Let's say a company post an opening online. You know someone who works at the company. Ask your contact to find out the name of the person hiring for that position. Also use the library, phone book, and Internet to track down names of hiring managers."