How long do you give someone to respond to a BOB request?  I have the last 2 books of a trilogy coming to me from a BOB.  She didn't have the 1st. So I looked up the 1st and found like 30 Bobbers who have the book.  I made an offer to someone who had another book I wanted.  3days later nothing. I realize that not everyone comes on everyday.  But I would think within 3 days she would have noticed the email at least saying she has a BOB offer. There's a couple other people who have this book and another one I want.  Plus about 20 others who's shelves I haven't even checked yet. I'm thinking if I don't get a response by Sun then I'm going cancel it and make an offer to someone else.

So how long do you give people?  If I cancel the request will it show up on their BOB account page as a cancelled transaction or will it just disappear?

I would usually give them about 5 days to answer unless they had a book I really wanted, then I might give them a bit longer. If I were you and I saw that other people had the same book plus others on thier shelf you want I would cancel the first transaction and try with them. If you cancel a bob transaction it shows up as a cancelled transaction.