Do you want comments?

Do people want the ability to leave comments? This is super easy to add. I'm picturing each profile has a section at the bottom that works like a guestbook. You can leave either a public or a private comment. The recipient can delete them. The sender can delete or edit his own. A user can turn off commenting, with all private libraries defaulted to comments-off.

I'm thinking it would be nice. But I don't want to turn this thing into "Friendster for books" as someone (wrongly) dubbed it. I may add the ability to "bookmark" other people's libraries, but the bookmarks will not be called "friends," with the inevitable "you're so-and-so's friend but they're not yours" dynamic. Besides, I hold to the traditional view that friends need to have been drunk together.