Fortunately Steve stopped the cursed Kontera double-underline ads, but just FYI if you run across them on other sites, they're easy enough to filter out.
For example I use PithHelmet as my ad-blocker on Safari on OS X, and just making a rule for "*kontera*" (kontera surrounded by wild-cards) selectively filters out all the yucky stuff and makes the net worth surfing again.
Just FYI!
Pres