Hi, Garg - I usually use target=new, but I try to do it on a limited basis. I know there's one of those tags that will open the new page in an existing window, if there is one open - and I wouldn't want to open in a window somebody has open for a reason.
Some people have suggested that they prefer to make the "open in new window" choice by themselves, instead of having a new window forced upon them.
I figure it helps people learn the advantage of using several windows, so I do it - but not always.
-Joe Offer-