I downloaded two plugins, and one of those I found was Adblock Plus. The question from me is why is that I can't find this plugin here in the K-Meleong website? It would be nice if third party would submit their K-Meleon specific plugins and be found on this site.
By the way nice browser. I installed the search bar plugin, and it works decently, but still has bugs, which is noted by the author. I hope he updates it, and improves it.