iDreamBooks.com, a book discoverability site that aggregates book reviews and rates titles, is partnering with Sony Reader e-bookstore to offer iDreambooks' ratings on the retail site.

The partnership goes live today. Consumers visiting the Sony store will be able to click through each book listed to a title page with the iDreamBooks icon - a cloud icon with a percentage figure that indicates the reviews that liked or did not like the book.

Founded in 2012 in San Francisco by Rahul Simha, Vish Chapalamadugu and Mohit Aggarwal, iDreamBooks.com aggregates more than 3,000 sources, mostly publications, but also blogs, as well as soliciting consumer ratings/reviews on the site.

In a phone interview to Publisher Weekly, Simha said that the company has five employees, which include its three founders. He said the site was similar to Rotten Tomatoes, whose cofounder Patrick Lee is incidentally an early investor in the venture. The company also received funding from venture capital firm 500 Startups.

Simha said the goal of the company is "to create an authentic and trustworthy rating system for books. We're like Rotten Tomatoes, you can rely on them that their ratings system can't be gamed. It's a great tool and we've tried to create something similar and useful."

Simha said the focus of the site was the Big Six publishers and rating top listed bestsellers, but he said that as they aggregate more reviews into their system, their focus is shifting. "We're adding more and more reviews and adding the backlist and we're switching our focus to what we're finding is being reviewed."