Have you tried reporting it? If you did and nothing happened then my guess is, it has something to do with the "UTM tag" that's in it
[AFAIK, it's only for tracking purposes]...
- Having said that, the part that I highlighted in red looks like a proper referral link to me.https://freebitco.in/?r=4&tag=bitcointalk&
utm_source=forum&
utm_medium=welcome_image&
utm_campaign=bitcointalk