This plug-in uses Google to search the Debian-kde mailing lists.
I recommend Firefox/Iceweasel Privacy Mode, AdBlock Plus, FlashBlock and NoScript.
The *previous* version of this add-on pulled it's icon from my server. It was alleged that the add-on should therefore not be trusted. The icon was only downloaded for the add-on install - there was no tracking. If you have concerns please upgrade to this version. The icon is now embedded in the add-on, and the source code is simple to read, and available at the bottom of this page.