Your resume is a crucial part of a successful job search. But take another gander: Are you unwittingly offering data that’s potentially fouling your hunt?

Some folks blab too much with this document, according to ResumeDoctor.com, a Vermont-based resume consulting service. The company surveyed nearly 100,000 resumes and found that almost a third, 29 percent, contained irrelevant data.

“Describing your hobbies, interests and marital status can make your resume read more like a dating profile,” said Brad Fredericks, a co-founder of the company.

For example, “listing your salary history in your resume before it’s requested is a bad idea, as it can put you at a disadvantage during the negotiation process or possibly even eliminate you from jobs that you would have considered,” he said. “It’s like playing poker with your cards showing.”