I review business books on my blog and I can tell you what catches my attention. A query that is pertinent - I don't review fiction, for example, although sometimes I get pitched fiction books. It needs to be addressed to me personally, not 'Dear Blogger' (although if it is a fabulous book I might overlook that. They rarely are).
I have also built up relationships with publishers over the 4 years I've been reviewing. Pitches from them will always get a second glance and a personal reply, even if I don't want the book. For authors, keep in touch with those papers or websites where you want to see your book appear. Not press releases - just a personal note every so often, the offer of a proof copy, sample chapter, author interview etc.
Reviewers like to give away things to our readers, so specify in your pitch if a signed copy is available for a giveaway.
The book also needs to be good. I have accepted review copies of two books that were so bad I refused to review them, as I had nothing good to say. I offered personal feedback to the authors and offered to return the books. But not all reviewers are like me! Sending a bad book to a reviewer could do your reputation more harm than good - you really don't want a bad review in the early days of your career.
Happy to expand on any of these points or let you have any more details - just drop me a note!
Good luck with your article