A grey hat, in the hacking community, refers to a skilled hacker who sometimes acts legally, sometimes in good will, and sometimes not. They are a hybrid between white and black hat hackers. They usually do not hack for personal gain or have malicious intentions, but may or may not occasionally commit crimes during the course of their technological exploits.

I heard first time about grey hat SEO.

Till now i know about white hat and black hat SEO.

Any way, you definition are good and satisfy me for grey hat SEO.

In short we can say that combination of white and black hat seo known as grey hat SEO.

Thanks
Alex

It's called "Blue Hat" too.......

Is there any violate hat? I love violate......LOL

So, if you are using a little black hat in what you called GREY hat, I think there are also possibility of getting banned in SEs by using it, right?

I have doubt. You are kidding or really gray hat is known as blue hat?

Kindly let me know once.

Thanks