What is the worst thing in content marketing?

[cbtech]

What is the worst thing in content marketing? According to your opinion.

[brian]

Hmmmm.... There are plenty if I may say.

People only talking about themselves, content only to get sales, content that has no value to the niche and/or community, grammatical problems etc. But the I find 'content that has no value' is the worst.

[AlyLauren]

Grammar might be a problem but what I see nowadays is the fact that originality is missing.