So, during Survival a "Kiss" button for different users has been appearing at the top of the forum pages.

Now the event is over, but they're still around and don't work. I can understand them still showing in the actual event forum, but shouldn't these random buttons be removed?

I think those are just the user-made ads that you're seeing. People can use the billboard feature from the cash shop to create their own ads, and many people use this during events to put their kiss/dance/whatever links where more people will see it and maybe click.

As long as they still have impressions left on the ad or unless the user manually removes it, then it will be left up. You'll probably see them start disappearing over the next few days though.

Strange, because I haven't seen usermade ads in a VERY LONG time! I figured it was a new feature with the new buttons.