A Chrome UserScript to hide all Russian threads on Kohana's forum.

KohanaForumHideRussian.user.js

// ==UserScript==
// @name           KohanaForumHideRussian
// @description    Hide Russian threads from Kohana forum.
// @include				*forum.kohanaframework.*
// ==/UserScript==

! function(){

	var items = document.querySelectorAll('ul.DataList li.Item');

	for(var i = 0, l = items.length; i < l; i++) {

		var
			item = items[i],
			category = item.querySelector('.Category');

		if (category !== null && category.innerHTML == 'Русскоязычное сообщество') {
			item.style.display = 'none';
		}
	}
}();