My YouTube comment spammed?

I posted my comment saying: "This is a very good video" and a few days later, it was spammed. I can;t understand it as I didn't say anything abusive.

Catherine2013-07-21T03:28:57Z

Favorite Answer

The answer: TROLLS! just ignore them, and you'll be fine. Of course, there may be a small chance that someone simply clicked the wrong button.