"The visibility of a book is an essential and determining factor of its success!"

Read the testimonials of our clients.

Wizard Fantasy Adventure author

"For anyone wanting the best possible online promotion available should look towards "Online Book Publicity" to get the job done right." - John R. Garland
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Book author

"OnlineBookPublicity under the direction of Hanji is run professionally and with intention to succeed. It is a fabulous service and a must for all authors, and after many years with them it is obvious to me that their publicity has been instrumental in my achievement as a #1 bestseller and award winning author. It has been my pleasure to refer many other author friends to this company, which is my highest compliment. Thank you Hanji for the good work that you do for us!" - Amazon Best Selling Author - Nora D'Ecclesis
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Military Mystery Adventure novel author

"Thanks to the efforts of the good and talented poeople at Genius Media and Substance Books, my book In the Line of Ire, now has the Amazon #1 Bestseller stemp" - Amazon Best Selling Author - Ed Dasso
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Inspirational Travel Memoir author

"Very complete service and thorough explanations of how to use them." - Amazon Best Selling Author - Barry Finlay
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Literary novel author

"Such a great value for independent writers! Hajni knows what she is doing and cares about her clients. Too many out there will take your money and give you nothing in return. This is the place to be." - Amazon Best Selling Author - Owen Thomas
(see original review)

Military Mystery Adventure novel author

Amazing New Bestseller! This book is selling 200 copies per day. #2 in Kindle Store > Mystery, Thriller & Suspense > Thrillers > Medical
"Thx Hajni, Couldn't have done it without you!" - Amazon Best Selling Author - Ed Dasso
(see original review)

Historical Adventure author

"Online Book Publicity is a powerhouse of knowledge in marketing and I have found them valuable and extremely helpful in promoting all my titles. I for one will keep using them. They are to be congratulated on all their hard work." - Amazon Best Selling Author - Elizabeth Revill
(see original review)

Romance Adventure novel author

"Hanji is like the energizer bunny. She keeps promoting and promoting. Online Book Publicity has been a constant source of marketing genius and the effort to help my sales has been outstanding. Consider giving them a try!" - TC Winters
(see original review)

Literary Adventure novel author

"For me, as an older more traditional author, Hajni provided a door to a world of marketing platforms that I had only heard about. Her instructions on how to take advantage of these sites has been invaluable." - Ralph Dinlocker
(see original review)

Romance Adventure novel author

"Hanji is the best! She does what she says she will and when she promised to do it. In fact, she goes above and beyond what she promises to do. She has promoted two of my contemporary international novels--No Greater Love and Lattices of Love. As I work on another international romance, I am already planning to ask her to help me with promotion." - Amazon Best Selling Author - Eris Field
(see original review)

Mystery and YA Paranormal Adventure novel author

"Hajni at Online Book Publicity is fabulous. She is up-to-date on all the newest methods of promoting the books represented by her and she pushes her authors to be involved in their campaigns. Online Book Publicity represents To Live and Die for Dance and my newest Cozy-Mystery release. I hope to continue with her for many years to come." - Francine Paino
(see original review)

Historical Military Adventure novel author

"I, the Sun, a rigorous biographical novel of Suppiluliumas, greatest Hittite king has doubled its monthly sales since becoming a "Substance" book. Weather this is from the Military readership or the Historical readership, I don't know so I am posting this in both places to thank everyone who's been buying the book for their support -- and especially Hajni" - Amazon Best Selling Author - Janet Morris - Perseid Press
(see original review)

Historical Adventure novel author

"I am very pleased with the services I have received over the past two years through Online Book Publicity. Hajni is a professional who knows what to do to get your book to the right audience. I will continue to use their services in the coming year. Well worth the cost." - Amazon Best Selling Author - Teresa McRae
(see original review)

Great author

"Hajni Blasko and Substance Books are the Rock Star of Marketing! She exceeded my expectations! Plan on staying with her throughout my writing career!" - Lorraine Carey
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Great Romance author

"An excellent service my book Hearts Can Change in Time is getting more attention since I signed up with Hajni's service." - Ron Hanlon
(see original review)

Great Novel author

"An excellent source for marketing my book The Haunting of Wolfe Haven. Hajni is on top of everything, stays in touch with the author, and works constantly to find the best arena for each work. She's awesome!" - DH Heaton
(see original review)

Historical Military Adventure novel author

"Since, I the Sun, the biographical novel of the greatest Hittite king, has been promoted by Substance Books we've doubled our sales. Because this book took two years to create and is among our favorites we're delighted. Our thanks to Hajni and to everyone buying and reading I, the Sun." - Amazon Best Selling Author - Janet Morris - Perseid Press
(see original review)