To GPA or Not To GPA, that is the question

This article from Careerbuilders.com offers some helpful advice for the recent grad regarding how, when and why to use your GPA on a resume. While it may have helped a recent grad, this not so recent, but not too far removed grad is wondering, "When do you stop putting a GPA on a resume?" Mine was good in college, so I tend to leave it on. But as I approach 30 (+/- 3 years,) should I remove it?