This tutorial will add comments-bubble icons to your post-titles displaying the total count of the comments.

Instructions to follow:

STEP #1:
Log in to Blogger, go to Layout -> Edit HTML
And mark the tick-box "Expand Widget Templates"

STEP #2:
Now find this in the template:
<h3 class='post-title entry-title'>

And immediately BELOW/AFTER it, paste this code:

Now find this code in the template:
</head>

And immediately ABOVE/BEFORE it paste this code:
<!--COMMENT-BUBBLES-STARTS--><style type="text/css"> .comment-bubble { float: right; background: url(http://i49.tinypic.com/2vugahu.jpg) no-repeat; width: 55px; height: 38px; font-size: 18px; margin-top: -15px; margin-right: 2px; text-align: center; } </style><!--COMMENT-BUBBLES-STOPS-http://exploitedpunks.blogspot.com-->

Edit the code in RED to change the image being used in the hack.
IMPORTANT: You may use any image instead of the one linked in the code above (STEP #3), but you have to mention its dimensions correctly (width and height) for correct placement of numbers on the image.

Comment-Bubbles you may use for this Blogger hack [Right Click and "Copy Image Address/Location"]:

Finally save the template.