It appears anything Steve Jobs still sells big time as his authorised biography, written by top-notch journalist Walter Isaacson, officially topped this year's best-selling books by giant online retailer Amazon.

Barely three months after its release, the Steve Jobs bio, chronicling his colourful life based on series of interviews with Isaacson, edged out titles that have been issued much earlier, including the latest court-room thriller penned by perennial top grossing author, John Grisham.

According to CNET, Isaacson's opus attracted more downloads and hard-copy purchases than those of previous top titles such as Tina Fey's 'Bossypants' and Jaycee Dugard's 'A Stolen Life'.

Compared to most of the titles that hit Amazon's top ten sellers for 2011, Jobs' bio-book was only issued weeks after he died of pancreatic cancer in October though the timing proved helpful for its sales as the book captured the momentum of incredible interest that the tech icon had generated even in death.

In the same report, Amazon has also indicated that an emerging trend has been bared along with the book hit list for the current, which is readers have considerably turned to e-copies as their preferred mode of acquiring their chosen titles.

Two titles that made it the top ten, Amazon said, were exclusively deployed via the Kindle Direct Publishing channel, which had bypassed the conventional print version on concentrated on the downloadable form.

Such option provided more premiums to book authors, according to the giant retailer, which entitle them to as much as 70 percent of the total revenue.

The development, CNET noted, underscored recent pronouncements by Amazon CEO Jeff Bozos that Kindle books and other form of e-books will eventually outpaced the sales movement of their printed counterparts.

In May alone, Amazon has reported that it has sold five more books for every 100 hard copy titles ordered from its sites.