[wrkfrmhm]

My view is that it depends on the action you want your visitor to take...

If it's an attribute/reference link to your article information source, select open in new window so the reader stays on your page.

If it's a link to your money page (product and referral links), select open in same window as you want your reader to focus on the action of joining, giving email details or buying your offer.

As a reader myself, I tend to riight-click on links to open in new tab (available in tabbed browsers like Firefox, Flock, etc) when I want to stay on the page. However for a great many of internet users with older machines and browsers (particularly Internet Explorer) they don't do this so it PAYS to do this for them.