Safari stuck in a script-like activity
Every minute on the minute without fail my Safari version 6.1.2 opens this same iTunes website in a new tab: https://iTunes.apple.com/us/app/pinterest/id429047995. It even interrupts me when I'm watching full screen movies, to open more tabs. I can't delete and reload Safari, I know that. And I can't perform any action requiring me to remain online - I'll just get interrupted with possible catastrophic results. Can anyone Help?!?!
MacBook Air (13-INCH, MID 2011), Mac OS X (10.7.5), iPhone 5 v6.1.4