well im going to buck the trend here
All mine are in the same window,
1. i personally think hitting the back button (which most ppl can also do via the thumb mouse button) is just as easy and quick as hitting the red x at the top right
2. I personally dont like new windows opening
3. i would say a large % of new windows i open from other sites i use dont get opened as my google toolbar blocks the pop up (i ave alxea on my other pc and they block new windows also – so i sure most toolbars block alot of them) I also have “no” pop up blocker set on my norton.
4. IE7 i have just read has inbuilt pop up blocker too and im sure alot of home users who use norton pop up blocker will have alot of new windows blocked (i know it says in small writing click ctrl when left click or something to open window – im sure alot of home users dont see that also)
Well they are my humble reasons and they work well for me