Mashable style social subscription widget is an amazing widget for blogger as title says itself that it is mashable.com style social subscription widget. since it used on WordPress blogs that i seen many times and now its available for blogger blogspot too. This widget has included all the social network links such as Facebook , Twitter, Google+ , RSS and many more. in one word we can say its a" all in one" social subscription widget.
STEP 1 ) - Go to Blogger Dashboard → Layout → Add a Gadget
STEP 2 ) - Choose HTML/Javascript
STEP 3 ) - Copy & Paste below code into it.
<style type="text/css">STEP 3) - Replace all social network URLs with yours Addresses
/*<!CDATA[*/
#bwg-mashable{width:300px;margin:auto;padding:0;}
.bwg-googleplus {margin-bottom:50px; height: 57px;}
.bwg-facebook {background:#FFFFFF;border: 1px solid #DCDCDC;margin-top: -2px;padding: 5px 10px;}
.bwg-gplusone {background-color: #f5fcfe;border: 1px solid #d8e6eb;border-top: 1px solid white;font-size: .87em;color: black;padding: 9px 0 0 11px;line-height: 24px;height:30px;}
.bwg-gplusone span {display: inline-block;vertical-align: middle;height: 20px;margin-top: -17px;font-size: 11px;font-family: "Arial","Helvetica",sans-serif;}
.bwg-twitter {background-color: #eef9fd;border: 1px solid #c7dbe2;border-top: 0;}
.bwg-twitter a.twitter-follow-button {display: block;}
.bwg-twitter iframe {margin: 9px 11px;}
.bwg-sociallinks {background-color: #d8e6eb;border: 1px solid #b6d0da;border-top: 1px solid #eff5f7;padding: 10px 11px;overflow: hidden;}
.bwg-sociallinks a {text-shadow: 1px 1px white;}
.bwg-sociallinks .bwg-social {list-style: none;overflow: hidden;margin: 0 !important;padding: 0 !important;}
.bwg-sociallinks .bwg-social li {border:0 none !important;float: left;line-height: 1;padding: 2px 0 4px 20px !important;margin-bottom: 3px;width: 70px;background: url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJ6pXTYg2smdh96GXhx3caR3DYGBOHaFYAUzjm4OGNIrRki_ep354LuE8Dz2SYyK_LM6yDJZvDGl9r7kfV0lavaeggDpxL-IS4QEX4_HNcMTz4x2Spbkwj_i-ztAJE4-OTIdRvGFf4u3XI/s1600/w2b_socialsprite.png) no-repeat;font-size: 12px;}
.bwg-sociallinks .bwg-social li a {display: block;font-weight: bold;color: #1E598E;text-decoration: none;text-shadow: 1px 1px 1px #fff;}
.bwg-sociallinks .bwg-social li a:hover {text-decoration: underline;}
.bwg-sociallinks .bwg-social li.facebook {background-position: 0 -450px !important;}
.bwg-sociallinks .bwg-social li.twitter {background-position: 0 -150px !important;}
.bwg-sociallinks .bwg-social li.youtube {background-position: 0 -90px !important;}
.bwg-emailbox {background-color: #E3EDF4;border: 1px solid #b6d0da;border-top: 1px solid #eff5f7;padding: 12px 16px;overflow: hidden;}
.bwg-emailbox form{width:100%;-webkit-box-sizing: border-box;-moz-box-sizing: border-box;-ms-box-sizing: border-box;box-sizing: border-box;border: 0;}
.bwg-emailbox input.emailu {float:left;-webkit-box-sizing: border-box;-moz-box-sizing: border-box;-ms-box-sizing: border-box;box-sizing: border-box;border: 0;color: #999;padding: 7px 10px 8px;width: 100%;-webkit-border-radius: 3px;-moz-border-radius: 3px;border-radius: 3px;font-size: 13px;}
.bwg-emailbox input.emailu:focus {color: #333;}
.bwg-emailbox input.submitu {-webkit-border-radius: 3px;-moz-border-radius: 3px;border-radius: 3px;color: white;padding: 7px 14px;font-weight: bold;font-size: 12px;float: right;cursor: pointer;}
.bwg-emailbox input.submitu:hover {text-decoration: none;}
.bwgOrange{border:1px solid #E08121 ;text-shadow:1px 1px 0 #E08121;background: #f79d4a;background: -moz-linear-gradient(top, #f79d4a 0%, #ef871f 100%);background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f79d4a), color-stop(100%,#ef871f));background: -webkit-linear-gradient(top, #f79d4a 0%,#ef871f 100%);background: -o-linear-gradient(top, #f79d4a 0%,#ef871f 100%);background: -ms-linear-gradient(top, #f79d4a 0%,#ef871f 100%);background: linear-gradient(top, #f79d4a 0%,#ef871f 100%);filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#f79d4a', endColorstr='#ef871f',GradientType=0 );}
.bwgOrange:hover{background: #f4b67c;background: -moz-linear-gradient(top, #f4b67c 0%, #ef871f 100%);background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f4b67c), color-stop(100%,#ef871f));background: -webkit-linear-gradient(top, #f4b67c 0%,#ef871f 100%);background: -o-linear-gradient(top, #f4b67c 0%,#ef871f 100%);background: -ms-linear-gradient(top, #f4b67c 0%,#ef871f 100%);background: linear-gradient(top, #f4b67c 0%,#ef871f 100%);filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#f4b67c', endColorstr='#ef871f',GradientType=0 );}.bwg-moresubs {background: none repeat scroll 0 0 #EBEBEB;border-style: solid;border-width: 1px;border-color: #fff #ccc #ccc;padding: 3px 8px 3px 3px;text-align: right;font-size: 7px;letter-spacing: 1px;}
.bwg-moresubs a {display: inline-block;font-weight: bold;color: #1E598E;text-decoration: none;text-shadow: 1px 1px 1px #fff;}
/*]]>*/
</style>
<div id="bwg-mashable">
<div class="bwg-googleplus">
<script type="text/javascript">
/*<![CDATA[*/
window.___gcfg = {lang: 'en'};
(function(){
var po = document.createElement("script");
po.type = "text/javascript"; po.async = true;po.src = "https://apis.google.com/js/plusone.js";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(po, s);
})();
/*]]>*/
</script>
<div class="g-plus" data-href="https://plus.google.com/u/4/+AnaLeighReal" data-width="300" data-height="auto" data-theme="light"></div>
</div>
<div class="bwg-facebook">
<iframe src="//www.facebook.com/plugins/like.php?href=http%3A%2F%2Ffacebook.com%2Ffreebloggerthemes&send=false&layout=standard&width=280&show_faces=true&action=like&colorscheme=light&font=arial&height=80" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:280px; height:66px;" allowtransparency="true"></iframe>
</div>
<div class="bwg-gplusone">
<script type="text/javascript">/*<![CDATA[*/
(function() {
var po = document.createElement("script"); po.type = "text/javascript"; po.async = true;
po.src = "https://apis.google.com/js/plusone.js";
var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(po, s);
})();/*]]>*/
</script>
<div class="g-plusone" data-size="medium" data-href="https://plus.google.com"></div>
<span>Recommend on Google</span>
</div>
<div class="bwg-twitter">
<a href="https://twitter.com/ClassyBloger" class="twitter-follow-button" data-show-count="true">Follow @ClassyBloger</a>
<script type="text/javascript">/*<![CDATA[*/!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");/*]]>*/</script>
</div>
<div class="bwg-sociallinks">
<ul class="bwg-social">
<li class="facebook"><a href="https://www.facebook.com/freebloggerthemes/">Facebook</a></li>
<li class="twitter"><a href="https://twitter.com/ClassyBloger">Twitter</a></li>
<li class="youtube"><a href="https://www.youtube.com/channel/UCnEAt2xqvTxkJB6BfaqwofQ">Youtube</a></li>
</ul>
</div>
<div class="bwg-emailbox">
<form action="http://feedburner.google.com/fb/a/mailverify" method="post" onsubmit="window.open('http://feedburner.google.com/fb/a/mailverify?uri=btemplates', 'popupwindow', 'scrollbars=yes,width=550,height=520'); return true" target="popupwindow">
<table width="100%">
<tr>
<td>
<input class="emailu" name="email" placeholder="Enter your email" type="text"/>
</td>
<td width="64px">
<input class="submitu bwgOrange" type="submit" value="Subscribe"/>
</td>
</tr>
</table>
<input name="uri" type="hidden" value="btemplates"/>
<input name="loc" type="hidden" value="en_US"/>
</form>
</div>
<div class="bwg-moresubs">
<a href="http://blogger-templatees.blogspot.com/">Get this Gadget</a>
</div>
</div>
STEP 4) - Save the gadget.
That's it.
These were steps of adding mashable style social subscription widget to blogspot. You can change background colors, width , height, etc by editing the CSS.