It always bothers me when links on a website lead to a new window when I'm
not expecting, especially when they open a PDF. For that matter, it bothers
me when I do expect a new window and it doesn't happen (an external site).
It seems to me this is an area where the web could use a new convention, so
that users would better understand the consequences of an interaction before
I sometimes add "(pdf)" or "(ppt)" etc after the link, which helps a little.
But would the web be a better place if there were convention that always
indicated "new window"?