It is stated so in the Community guidelines:
Welcome to General Discussion - Please Read!
Don’t use words like “Blizzard,” “Blue,” or any employee names in a thread topic.
Everyone would like Blizzard to read and acknowledge his or her post, and we understand that. However, these kinds of posts won’t help you achieve your goal. Please make your thread title relevant to the post subject. Threads violating this guideline are subject to removal, along with forum account suspension.