I have **example.com** and **m.example.com** which both `rel=canonical` and `rel=alternate` to each other. On my mobile site I have a "desktop site" link that links to **example.com?mobileOut** that opts out of the mobile redirect. The issue is **example.com/?mobileOut** is getting indexed with the **?mobileOut** param in the url. Can I nofollow the "desktop site" link and be safe?