Occasionally this site show up on my network shield as a benign blue spike
The cookies are blocked from forming now (Firefox specifically blocks these sites and blocks all third party cookies)
My router has blocked all access to these sites, but I’ve noticed I am still getting some blocked connections to them on my router logs
[Site blocked: secure-us.imrworldwide.com] from source 192.168.1.8, Monday, Apr 29,2013 23:01:59
[Site blocked: bs.serving-sys.com] from source 192.168.1.8, Monday, Apr 29,2013 23:02:08
How do I make them thoroughly go away?