Over the years I've become close friends with designer Francisco Inchauste. He's written many fantastic articles on design.
Last year he became the editor in charge for the UX section of Smashing Magazine. He's always looking for great UX article submissions or people who are interested in becoming reviewers for articles. If you're interested, please email him your draft or any questions you may have to email@example.com
Here's Smashing Magazine's official page on how to become an author/reviewer:
P.S. authors/reviewers are compensated, so this is not free volunteer work:
All of our authors get paid. The amount of money depends on the length of the article and its quality. Before your articles go live, we make sure that both sides agree upon the publishing and payment conditions. You can also put a link to your website in the “About the author”-section in the article.
I told Francisco that we have a great UX community here, it'd be a win-win if some of us get published on SM. They get great content and UX.SE gets some exposure in the design community. SM forbids self-promotional posts so our articles shouldn't come off as an advertisement for UX.SE. I think it's reasonable to put "I'm an active contributor/mod on UX.se" in the author bio, if the article gets published.