This blog had default template 'Minima 2 column' since the time it started. As I didn't like other templates provided by blogger, I retained the default one for more than one year.
The two column layout was getting cramped up. So I decided to hunt for templates outside blogger. The search landed me into Blogger Tips and Tricks, where I got 'Minima 3 column fixed' template for download. So the present look and feel is because of this template, with cosmetic modifications from me.
Well changing look and feel is like cooking. One will never know when to stop. I will be continuously making partial changes for next 2-3 days. Looking forward for your feedbacks and suggestions.