Welcome to Namepros.
First off, I'm not a lawyer, so my "advice" is simply that.
I'm quite sure you might think you're sitting on a potential pot of gold, but it might do you well to search this forum regarding trademarked names / cybersquatting and WIPO.
You might be OK if these happen to be your initials or an acronym for your own business. If not, beware.
"MTV" is quite an internationally recognized acronym for a company who I'm sure retain some mighty powerful legal staff. I wouldn't post these in a public forum. And I certainly wouldn't park them or monetize them in any fashion.
Best of luck!