Addthisto.com is an social bookmarking service, addthis launch few months ago it’s under beta testing.
If you would like to use addthisto.com on your site, use addthisto’s widget submit code
Code:
<a href=”javascript:q=(document.location.href);void(open(’http://www.addthisto.com/submit.php?url=’+escape(q),”,’resizable,location,menubar,toolbar,scrollbars,status’));” mce_href=”javascript:q=(document.location.href);void(open(’http://www.addthisto.com/submit.php?url=’+escape(q),”,’resizable,location,menubar,toolbar,scrollbars,status’));”>AddThisTo</a>
Just place the above code into your page, for the direct submit, you can use addthisto’s images as well

A live demo can be found at
www.r6k.net
For peoples that want to increasing their google pagerank please check out
PageRank - How many Inbound Links Do You Need? for more information about google pagerank
As you know when you submitted your link on addthisto, you can see your link on
http://www.addthisto.com/upcoming.php which is pagerank of 3, so that mean you already have 1.5 google pagerank
So how do you get a pagerank of 2?
Tips
On the index page of addthisto
http://www.addthisto.com/ it’s a pagerank of 4, addthisto delay their approve link, so how do you get on the index page?
To get on the index of addthisto.com you’ll need total of 5 voted, once you get above 5 vote, your link will be display on the index page, voila your own a pagerank of 2
You can submit your link yourself or submit by your visistor, just use the widget code that i mention above