Unlike the Sample Chapters hosted on this site, Google Books offers 20% of the novel through its entire range, in PDF format. Obviously, this does not make for good reading continuity, but it should better aid in a purchase decision for the ambivalent–giving a much better flavor, say, for the action of the mid and later chapters. It should also raise the visiblity of the novel, which is never a bad thing.
Speaking of Google, the posts on this blog are often picked up in Google Plus, LinkedIn, Tumblr And StumbleUpon. We also have a Pinterest account–so take your choice!