------------------ SQL --------------------
CREATE TABLE IF NOT EXISTS `bb_post_rate` (
  `post_id` INT( 11 ) NOT NULL default '0',
  `user_id` INT( 11 ) NOT NULL default '0',
   PRIMARY KEY (`post_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

ALTER TABLE `bb_posts` ADD `rate_post` INT( 11 ) NOT NULL DEFAULT '0';
--------------------------------------------
------------ init_bb.php ------------
Найти:
define('BB_WORDS',                'bb_words');

После добавить:
define('BB_POST_RATE',            'bb_post_rate');
--------------------------------------------
--------- ajax.php --------------
Найти:
'user_todey'        => array('user'),

После добавить:
'rate_post'			    => array('user'),

Перед последней скобкой добавить:
function rate_post()
	{
		global $userdata;
		$mode       = (string) $this->request['mode'];
		$pid        = (int) $this->request['post_id'];
		$rate_sum   = (int) $this->request['rate_sum'];
		$user_id  	= (int) $userdata['user_id'];
		
		$rate_user = DB()->fetch_row("SELECT user_id FROM ". BB_POST_RATE ." WHERE post_id = $pid AND user_id = $user_id");
		if($mode == 'plus' && $rate_user != $user_id)
		{
			$rate_sum = $rate_sum + 1;
		    if($rate_sum > 0) $pl_mn = '+';
		    elseif($rate_sum > 0) $pl_mn = '-';
		    else { $pl_mn = ''; }
			$rate_post = 'rate_post + 1';
		}
		elseif($mode == 'minus' && $rate_user != $user_id)
		{
			$rate_sum = $rate_sum - 1;
		    if($rate_sum > 0) $pl_mn = '+'; 
		    elseif($rate_sum > 0) $pl_mn = '-'; 
		    else { $pl_mn = ''; }
			$rate_post = 'rate_post - 1';
		}
		else
		{
		   $this->ajax_die('Вы уже голосовали за этот пост');
		}
		
		DB()->query("UPDATE ". BB_POSTS ." SET rate_post = $rate_post WHERE post_id = ".$pid);
		DB()->query("INSERT INTO ". BB_POST_RATE ." SET post_id = ".$pid.", user_id = ".$user_id);
		$this->response['post_id'] = $pid;
		$this->response['rate_sum'] = $rate_sum;
		$this->response['rate_sum_str'] = (string) $pl_mn.$rate_sum;
	}
--------------------------------------------
--------------- viewtopic.php  ------------------
Найти:
p.*,

В эту же строчку добавить:
pr.*,

Найти:
LEFT JOIN ". BB_GROUPS     ." g ON(g.group_id = p.poster_rg_id)

После добавить:
LEFT JOIN ". BB_POST_RATE  ." AS pr ON(pr.post_id = p.post_id AND pr.user_id = ". $userdata['user_id'] .")

Найти:
$newest = $next_topic_id = 0;
$start  = isset($_GET['start']) ? abs(intval($_GET['start'])) : 0;

Выше добавить:
$pl_mn = ($postrow[$i]['rate_post'] > 0) ? '+' : ($postrow[$i]['rate_post'] < 0) ?'-' : '';

Найти:
'RG_SIG'             => $rg_signature,
'RG_SIG_ATTACH'      => $postrow[$i]['attach_rg_sig'],

Ниже добавить:
'POST_RATE'           => ($postrow[$i]['rate_post']) ? $pl_mn.$postrow[$i]['rate_post'] : 0,
--------------------------------------------
--------------- viewtopic.tpl  ------------------
Найти:
<!-- IF SPOILER_OPENED -->
<script type="text/javascript">
	$(document).ready(function(){ $('div.sp-head').click(); });
</script>
<!-- ENDIF -->
<!-- ENDIF / LOGGED_IN -->

Ниже добавить:
<style>
.rate_summ  { font-weight: bold; font-size: 11px; vertical-align: super; }
.rate_null  { color: grey;  }
.rate_plus  { color: green; }
.rate_minus { color: red;   }
</style>
<script>
document.addEventListener('DOMContentLoaded', function(){
	function rep_vote(for_user_id, vote_type) {
		$('#for-user-id').val(for_user_id);
		$('#vote-type').val(vote_type);
		$('#rep-submit-btn').click();
	}
	function strToInt(s) {
		try {
			return s.match(/^[^0-9]*([\d]+)/)[1];
		} catch (e) {
			return 0;
		}
	}
	$('.rate_down').each(function(){
		$(this).mouseover( function(){ $(this).css('color', 'grey'); });
		$(this).mouseout( function(){ $(this).css('color', 'red'); });
		$(this).click( function(){
			var rate_post_id = strToInt($(this).attr('id'));
			var rate_sum = $('#rate_summ_'+ rate_post_id).text();
			ajax.rate_post(rate_post_id, 'minus', rate_sum);
		});
	});
	$('.rate_up').each(function(){
		$(this).mouseover( function(){ $(this).css('color', 'grey'); });
		$(this).mouseout( function(){ $(this).css('color', 'green'); });
		$(this).click( function(){
			var rate_post_id = strToInt($(this).attr('id'));
			var rate_sum = $('#rate_summ_'+ rate_post_id).text();
			ajax.rate_post(rate_post_id, 'plus', rate_sum);
		});
	});
	ajax.rate_post = function(pid, mode, rate_sum) {
		ajax.exec({
			action    : 'rate_post',
			mode      : mode,
			rate_sum  : rate_sum,
			post_id   : pid,
		});
	};
	ajax.callback.rate_post = function(data){
		if (data.rate_sum > 0)
		{
			var rate_class = "rate_plus";
			$('#rate_up_'+ data.post_id)
				.css('color', 'green')
				.unbind('mouseover').unbind('mouseout').unbind('click');
			$('#rate_down_'+ data.post_id)
				.unbind('mouseover').unbind('mouseout').unbind('click');
		}
		if (data.rate_sum < 0)
		{
			var rate_class = "rate_minus";
			$('#rate_down_'+ data.post_id)
				.css('color', 'red')
				.unbind('mouseover').unbind('mouseout').unbind('click');
			$('#rate_up_'+ data.post_id)
				.unbind('mouseover').unbind('mouseout').unbind('click');
		}
		if (data.rate_sum == 0)
		{
			var rate_class = "rate_null";
			$('#rate_down_'+ data.post_id).css('color', 'grey');
			$('#rate_up_'+ data.post_id).css('color', 'grey');
		}
		$rate_data = $('#rate_summ_'+ data.post_id);
		$rate_data.html(data.rate_sum_str);
		$rate_data.removeAttr('class');
		$rate_data.addClass(rate_class);
	};
});
</script>

Найти:
<!-- IF not IN_MODERATION --><a class="txtb" href="{PAGE_URL}&amp;mod=1&amp;start={PAGE_START}#{postrow.POST_ID}">{MOD_POST_IMG}</a>{POST_BTN_SPACER}<!-- ENDIF -->
				<!-- ENDIF -->
			</p>
			<div class="clear"></div>
		</div>
		
Ниже добавить:
<div id="rate_container_{postrow.POST_ID}" class="rate_container floatR pad_6 nowrap">
					<span id="rate_summ_{postrow.POST_ID}" class="rate_summ rate_plus">{postrow.POST_RATE}</span>&nbsp;
					<span id="rate_down_{postrow.POST_ID}" class="rate_down fa fa-thumbs-o-down fa-2x rate_null">[-]</span>
					<span id="rate_up_{postrow.POST_ID}" class="rate_up fa fa-thumbs-o-up fa-2x rate_plus">[+]</span>
				</div>
--------------- END  ------------------