Dear Sir or Madam 2

Dear Sir or Madam:
I thought this greeting was out of style, but I received a LinkedIn message from a prominent Internet Marketer yesterday and it began:

ATTN: Calling All Company/Business Owners

Dear Sir/Madam;

If you are interested in:

I began to wonder if people still use this generic greeting on a resume cover letter? I’ve created a poll to answer the question Would you ever use this salutation for a resume cover letter?
Let me know your thoughts