I don't wholeheartedly embrace everything in this article - but they certainly got one thing right. Recruiters no longer need a formal cover letter. You'll be much more effective and approachable with a short note expressing your interest and a resume or link to your online profile.
Cover letters were made for an age where people typed resumes and cover letters, stuffed them in envelopes and mailed them to companies. In that era people had a shared home phone and weren't likely to answer the first time the recruiter called them. It only makes sense that we dispose of this formality. If you're still using a long formal cover letter, it looks tired. Please retire it.
WHAT RECRUITERS CARE LESS ABOUT 1. Your cover letter. In the past few years, some have declared cover letters obsolete—apparently justifiably so. "I haven’t read one in a long time," confides Judi Kruger, director of talent acquisition for global sales and services at Cisco. That’s mainly because they just aren’t an efficient way to comb through high volumes of candidates quickly (and with minimal unconscious bias).