Baik sobat langsung saja nih cara memasang share button melayang di blog :

<style>

#pageshare {position:fixed; bottom:15%; margin-left:-71px; float:left; border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;background-color:#fff;padding:0 0 2px 0;z-index:10;}

#pageshare .sbutton {float:left;clear:both;margin:5px 5px 0 5px;}

.fb_share_count_top {width:48px !important;}

.fb_share_count_top, .fb_share_count_inner {-moz-border-radius:3px;-webkit-border-radius:3px;}

.FBConnectButton_Small, .FBConnectButton_RTL_Small {width:49px !important; -moz-border-radius:3px;/*bs-fsmsb*/-webkit-border-radius:3px;}

.FBConnectButton_Small .FBConnectButton_Text {padding:2px 2px 3px !important;-moz-border-radius:3px;-webkit-border-radius:3px;font-size:8px;}

</style>

<div id="pageshare" title="Get this code from ariqrastamanuyea.blogspot.com">

<div class="sbutton" id="fb">

<a href="http://www.facebook.com/sharer.php" name="fb_share" type="box_count">Share</a><script src="http://static.ak.fbcdn.net/connect.php/js/FB.Share" type="text/javascript">

</script></div>

<div class="sbutton" id="rt">

<script src="http://tweetmeme.com/i/scripts/button.js" type="text/javascript">

</script></div>

<div class="sbutton" id="gb">

<a class="google-buzz-button" data-button-style="normal-count" href="http://www.google.com/buzz/post" title="post on google buzz">

<script src="http://www.google.com/buzz/api/button.js" type="text/javascript">

</script>

</a></div>

<div class="sbutton" id="gplusone">

<script src="http://apis.google.com/js/plusone.js" type="text/javascript">

</script>

<g:plusone size="tall"></g:plusone></div>

</div>