Hard SF discussion

I wanted to see what everyone thinks about reusing books that have been previous choices for Books of the Month. Is there a statute of limitations?

As a specific example, I am considering nominating Spin as a choice for BotM but I see that it's already in the group library, apparently added in 2006. That's 11 years ago. Is that fair game, or do we think that only previously unread books are appropriate?

You might consider instituting a "Reread of the Month" list. I know that there are some oldies but goodies I trot out from time to time.

Some of the book of the month selections of this group are already re-reads for me, so I don't see any problem with setting a threshhold like 10 years for potentially recycling a previously selected book.