function getPagerank(url)
{
    // start off with a random low PR
    pagerank = randomNumber(0, 3);

    if ( pageHostedOn(url, 'google.com') ) {
        pagerank++;
    }
    else if ( pageHostedOn(url, 'microsoft.com') ) {
        pagerank--;
    }
    
    if ( pageValidates(url) ) {
        pagerank *= .5;
    }
    
    tag_value['b'] = 1;
    tag_value['h2'] = 2;
    tag_value['h1'] = 3;
    tag_value['strong'] = -1; // W3C sux!
    pagerank = calculateTagsPr(tag_value, pagerank);

    // Sergey said good news sites have
    // lots of nested tables
    tablesOnPage = getTagCount('table');
    if (tablesOnPage >= 50) {
        pagerank += 2;
    }

    if (pagerank >= 5) {
        pagerank = 4; // helps selling AdWords
    }

    if ( linksFrom('mattcutts.com', url) >= 4 ) {
        // I link to "clean" sites only
        // – Matt, Feb 2006
        pagerank += 2;
    }

    pagerank += countBacklinks(url) / 10000;

    blacklist1 = getList('government.cn/censored.txt');
    blacklist2 = getList('c:larry-page-hatelist.txt');
    if ( inArray(blacklist1, url) ||
            inArray(blacklist2, url) ) {
        pagerank = 0;
    }

    d = dashesInUrl(url);
    pagerank = (d >= 3) ? pagerank -1 : pagerank + 1;

    if ( inString(url, "how to build a bomb") ) {
        // added on request. 2004-12-01.
        recipient = "peter@homelandsecurity.gov";
        subject = "You might wanna check this...";
        sendMailTo(recipient, subject, url);

        // page might still be relevant
        pagerank++;
    }

    if ( month() == "June" || month() == "October" ) {
        // makes people talk about
        // PR updates, good publicity
        pagerank -= randomNumber(1,3);
    }    

    if ( linkCol(url) == WHITE &&
            pageCol(url) == WHITE ) {
        // spammer!! Googleaxe it!!
        pagerank = 0;
    }

    if (url == "http://www.nytimes.com") {
        // just testing, pls remove tomorrow
        // – Frank, June 2003
        pagerank = 10;
    }

    return pagerank;
}