Shoutbox

I installed Messenger Plus for Skype on my dad's computer a couple of months ago. And that was ok, but the problem was I could not get Plus Network to go away! Every time I'd log onto Google Chrome, my default browser, it would just be there, even though I had google.com set as my homepage. After uninstalling Messenger Plus, it was STILL there. Now, I have a new laptop, and I've downloaded Chrome on here, logged into my Google account, AND IT'S BACK. AND IT WON'T GO AWAY. I've made sure it isn't in my search engines, it isn't in my homepages, and I've even added it to my blocked sites BUT IT STILL WON'T GO AWAY. And I don't even have Messenger Plus installed on this laptop! Somebody please help me!