doubleclick is a common adware that's placed on your computer via any number of sites. I doubt that you contracted it here. However, the coding on the forum may interact with doubleclick in a funny way unlike the other sites you visit.

As for giving the mod(s) a hard time about not removing a user: I've already said this, you simply send a PM to the mod(s) and/or Curt and leave it at that. It's been my experience on this board over the 4 plus years I've been a member that while Curt and company may not act with haste, they always act fairly and with finality. So, send in your PM, make sure to include links, and most of all, be RESPECTFUL. This board is provided to us free of charge and without much thanks.

In the mean time, TCPF, just use the ignore feature.