function get_root_parent($page_id) {
global $wpdb;
$parent = $wpdb->get_var("
SELECT post_parent
FROM $wpdb->posts
WHERE post_type='page'
AND ID = '$page_id'");
if ($parent == 0) return $page_id;
else return get_root_parent($parent);
}

The more pingback addresses you have, the more chance you have of drawing traffic to your website – because more websites are being notified that you have updated your blog. So, here’s a nice big list of pingback addresses that you can add to your WordPress installation’s settings.

http://rpc.pingomatic.com/

http://api.moreover.com/RPC2

http://api.my.yahoo.co.jp/RPC2

http://api.my.yahoo.com/RPC2

http://audiorpc.weblogs.com/RPC2

http://blog.goo.ne.jp/XMLRPC

http://blogpeople.net/ping

http://blogsearch.google.ae/ping/RPC2

http://blogsearch.google.at/ping/RPC2

http://blogsearch.google.be/ping/RPC2

http://blogsearch.google.bg/ping/RPC2

http://blogsearch.google.ca/ping/RPC2

http://blogsearch.google.ch/ping/RPC2

http://blogsearch.google.cl/ping/RPC2

http://blogsearch.google.co.cr/ping/RPC2

http://blogsearch.google.co.hu/ping/RPC2

http://blogsearch.google.co.id/ping/RPC2

http://blogsearch.google.co.il/ping/RPC2

http://blogsearch.google.co.in/ping/RPC2

http://blogsearch.google.co.it/ping/RPC2

http://blogsearch.google.co.jp/ping/RPC2

http://blogsearch.google.co.ma/ping/RPC2

http://blogsearch.google.co.nz/ping/RPC2

http://blogsearch.google.co.th/ping/RPC2

http://blogsearch.google.co.uk/ping/RPC2

http://blogsearch.google.co.ve/ping/RPC2

http://blogsearch.google.co.za/ping/RPC2

http://blogsearch.google.com.ar/ping/RPC2

http://blogsearch.google.com.au/ping/RPC2

http://blogsearch.google.com.br/ping/RPC2

http://blogsearch.google.com.co/ping/RPC2

http://blogsearch.google.com.do/ping/RPC2

http://blogsearch.google.com.mx/ping/RPC2

http://blogsearch.google.com.my/ping/RPC2

http://blogsearch.google.com.pe/ping/RPC2

http://blogsearch.google.com.sa/ping/RPC2

http://blogsearch.google.com.sg/ping/RPC2

http://blogsearch.google.com.tr/ping/RPC2

http://blogsearch.google.com.tw/ping/RPC2

http://blogsearch.google.com.ua/ping/RPC2

http://blogsearch.google.com.uy/ping/RPC2

http://blogsearch.google.com.vn/ping/RPC2

http://blogsearch.google.com/ping/RPC2

http://blogsearch.google.de/ping/RPC2

http://blogsearch.google.es/ping/RPC2

http://blogsearch.google.fi/ping/RPC2

http://blogsearch.google.fr/ping/RPC2

http://blogsearch.google.gr/ping/RPC2

http://blogsearch.google.hr/ping/RPC2

http://blogsearch.google.ie/ping/RPC2

http://blogsearch.google.in/ping/RPC2

http://blogsearch.google.it/ping/RPC2

http://blogsearch.google.jp/ping/RPC2

http://blogsearch.google.lt/ping/RPC2

http://blogsearch.google.nl/ping/RPC2

http://blogsearch.google.pl/ping/RPC2

http://blogsearch.google.pt/ping/RPC2

http://blogsearch.google.ro/ping/RPC2

http://blogsearch.google.ru/ping/RPC2

http://blogsearch.google.se/ping/RPC2

http://blogsearch.google.sk/ping/RPC2

http://blogsearch.google.tw/ping/RPC2

http://blogsearch.google.us/ping/RPC2

http://feedsky.com/api/RPC2

http://hamo-search.com/ping.php

http://holycowdude.com/rpc/ping/

http://ping.blogoon.net/

http://ping.blogs.yandex.ru/RPC2

http://ping.fc2.com/

http://ping.feedburner.com/

http://ping.kutsulog.net/

http://ping.myblog.jp/

http://ping.namaan.net/rpc

http://ping.snap.com/ping/RPC2

http://ping.syndic8.com/xmlrpc.php

http://ping.weblogalot.com/rpc.php

http://ping.wordblog.de/

http://r.hatena.ne.jp/rpc

http://rpc.bloggerei.de/ping/

http://rpc.blogrolling.com/pinger/

http://rpc.icerocket.com:10080/

http://rpc.pingomatic.com

http://rpc.reader.livedoor.com/ping

http://rpc.technorati.com/rpc/ping

http://rpc.technorati.jp/rpc/ping

http://rpc.twingly.com/

http://rpc.weblogs.com/RPC2

http://wasalive.com/ping/

http://www.blogpeople.net/servlet/weblogUpdates

http://xmlrpc.blogg.de

http://xping.pubsub.com/ping/

http://zhuaxia.com/rpc/server.php

http://pingoat.com/goat/RPC2

http://api.feedster.com/ping

http://api.moreover.com/ping

http://api.my.yahoo.com/rss/ping

http://www.blogdigger.com/RPC2

http://www.blogshares.com/rpc.php

http://www.blogsnow.com/ping

http://www.blogstreet.com/xrbin/xmlrpc.cgi

http://bulkfeeds.net/rpc

http://www.newsisfree.com/xmlrpctest.php

http://ping.blo.gs/

http://www.azfeeds.com/

http://www.blogsearchengine.com/

http://www.blogtopsites.com/

http://www.feedbase.net/

http://www.feedsubmitter.com/

http://www.fybersearch.com/

http://www.plazoo.com/

http://www.readablog.com/

http://www.rssfeeds.com/

http://www.rssmad.com/

http://www.rss-spider.com/

http://blo.gs/ping.php

http://www.pingerati.net/

http://feedshark.brainbliss.com/

http://www.pingmyblog.com/

http://geourl.org/ping

http://ipings.com/

http://www.icerocket.com/

http://www.weblogalot.com/ping

http://rpc.wpkeys.com

http://rpc.britblog.com

http://cullect.com/feed/ping

http://ping.bitacoras.com

http://topicexchange.com/RPC2

http://www.blogoole.com/ping/

http://www.popdex.com/addsite.php

http://www.wasalive.com/ping/

http://www.weblogues.com/RPC/

http://blogping.unidatum.com/RPC2/

Having the ability to edit the hosts file is vital to many website developers. Unfortunately Windows 7 locks down some permissions, preventing you from editing the file straight away, regardless of having an administrator account.

I have seen multiple ways of getting around this, but I found the easiest way to be the following:

1. Right click the hosts file
2. Click Properties
3. Click the Security tab
4. Highlight your user account in the list
5. Press the edit button
6. Select Full control
7. Press OK in the various dialogue boxes to confirm the changes

Now you should be able to open and save the hosts file in Notepad. Hurrah.