Just a simple yes/no will do
I have one, I don't use it. And will not give it out. I also use facebook, but Won't give that out either.
I have a myspace and a facebook, but I haven't been on my myspace in about 3 or 4 years. Normally I visit facebook every day or so.
I have a myspace, I just haven't used it in years. I have a facebook, but I'm not giving it out to strangers.
I have a Facebook account, but I never had a MySpace account. By the time I got an email account and a Facebook account, MySpace was already in decline.