I think the issue with Goodreads continues to be that people want Facebook/Twitter for readers, and its not and will likely never be.
As an author, the specialty nature of Goodreads doesn't provide enough reach even though the segment of the population you are reaching is excellent. The additional eyes, and casual readers you pickup elsewhere makes the energy devoted to Facebook a better investment.
For readers, I just don't think the discovery aspect is as useful. I think a lot of this like last.fm, where logging listening could provide good recommendations. Books take longer to consume than songs or albums, and there was very little cost to music compared to books. Lastly I just think your average reader, doesn't read enough books to take advantage of the recommendations.
As an author, the specialty nature of Goodreads doesn't provide enough reach even though the segment of the population you are reaching is excellent. The additional eyes, and casual readers you pickup elsewhere makes the energy devoted to Facebook a better investment.
For readers, I just don't think the discovery aspect is as useful. I think a lot of this like last.fm, where logging listening could provide good recommendations. Books take longer to consume than songs or albums, and there was very little cost to music compared to books. Lastly I just think your average reader, doesn't read enough books to take advantage of the recommendations.