Everytime I log into Google Analytics, I'm constantly bombarded with this URL at the top of all my results:
I mean, as confusing as Google Analytics, it's even harder to understand where the fuck anything is coming from when this SEMALT is always showing up. Now i've done a bunch of crawling on the internet myself, and it seems that semalt is a crawling referral nasty thing.
So we should remove it right? Well, I can't see a reason to not block it. If no real human traffic is hitting your website from this address, then you've got no reason to have it mess with your statistics.
To stop it from getting to your websites, put this is the .htaccess file that is in the root of your website.