<?php
$filename = 'keywords.txt';
$handle = fopen($filename, "rb");
$keywords = fread($handle, filesize($filename));
fclose($handle);

$keywords = str_replace(" ", "+", $keywords);
$keywords = explode("\n", $keywords);

foreach($keywords as $keyword)
{
  echo 'http://blogsearch.google.com/blogsearch_feeds?hl=en&q=' . $keyword . '&ie=utf-8&num=100&output=rss<br>';
  echo 'http://feeds.technorati.com/posts/tag/' . $keyword . '<br>';
  echo 'http://search.msn.com/results.aspx?q=' . $keyword . '&first=11&format=rss<br>';
  echo 'http://www.blogpulse.com/rss?query=%22' . $keyword . '%22&sort=date&operator=phrase<br>';
}