https://api.vk.com/method/likes.getList?type=sitepage&owner_id=2018480&page_url=http://lifehacker.ru/2013/11/11/kogda-pora-brosat-pit/&filter=likes
$contents = file_get_contents('http://vk.com/share.php?act=count&index=1&url='.$url);
preg_match('/VK\.Share\.count\(1, ([0-9]+)\)/', $contents, $matches);
if(isset($matches[1])){
$counters['vk'] = (int) $matches[1];
}