Custom social sharing icons

A.markdown

Custom Social Sharing Buttons

Custom social sharing buttons for Twitter, Facebook, Google Plus, LinkedIn, StumbleUpon, and Pinterest.

via http://siliconstation.com/how-develop-custom-google-plus-button/

<a class="icon-twitter" rel="nofollow"
	href="http://twitter.com/"
	onclick="popUp=window.open(
		'http://twitter.com/intent/tweet?text=\'[Page Title]\' via @[handle] - [url]',
		'popupwindow',
		'scrollbars=yes,width=800,height=400');
	popUp.focus();
	return false">
	<i class="visuallyhidden">share on twitter</i>
</a>

<a class="icon-facebook" rel="nofollow"
	href="http://www.facebook.com/"
	onclick="popUp=window.open(
		'http://www.facebook.com/sharer.php?u=http://example.com',
		'popupwindow',
		'scrollbars=yes,width=800,height=400');
	popUp.focus();
	return false">
	<i class="visuallyhidden">share on facebook</i>
</a>

<a class="icon-gplus" rel="nofollow"
	href="http://www.plus.google.com/"
	onclick="popUp=window.open(
		'https://plus.google.com/share?url=http://example.com',
		'popupwindow',
		'scrollbars=yes,width=800,height=400');
	popUp.focus();
	return false">
	<i class="visuallyhidden">share on google plus</i>
</a>

<a class="icon-linkedin" rel="nofollow"
	href="http://www.linkedin.com/"
	onclick="popUp=window.open(
		'http://www.linkedin.com/shareArticle?url=http://example.com',
		'popupwindow',
		'scrollbars=yes,width=800,height=400');
	popUp.focus();
	return false">
	<i class="visuallyhidden">share on linkedin</i>
</a>

<a class="icon-stumbleupon" rel="nofollow"
	href="http://www.stumbleupon.com/"
	onclick="popUp=window.open(
		'http://www.stumbleupon.com/submit?url=http://example.com',
		'popupwindow',
		'scrollbars=yes,width=800,height=400');
	popUp.focus();
	return false">
	<i class="visuallyhidden">share on stumbleupon</i>
</a>

<a class="icon-pinterest" rel="nofollow"
	href="http://www.pinterest.com/"
	onclick="popUp=window.open(
		'http://pinterest.com/pin/create/button/?url=http://example.com&amp;media=[full image url]&amp;description=[page title]',
		'popupwindow',
		'scrollbars=yes,width=800,height=400');
	popUp.focus();
	return false">
	<i class="visuallyhidden">share on pinterest</i>
</a>

<a class="icon-email" rel="nofollow"
	href="mailto:?subject=[Page Title] via [Site Name]&amp;
	body=I've just read '[Page Title]' at [url]">
	<i class="visuallyhidden">share via email</i>
</a>

So in the following lines....Is the Example.com website, that of my own social website url? or A generic Social Share url? Since they will click this and be sharing this on their own social streams, I don't understand what url to put in the placeholder? Thanks for your time!!!!

onclick="popUp=window.open(
'http://pinterest.com/pin/create/button/?url=http://example.com&media=[full image url]&description=[page title]',