I've been exchanging work with another writer for a couple months now. She's very nice and has helped me with her crits, while I feel I've returned the favor. She just emailed me, told me she was thinking of querying my agent, and asked if I thought she'd like her manuscript. She's either asking for a referral, or if I say I think she'd like it then the query will say, "Oh, btw your client Keith thinks you'll like it!"
I was offered a referral once by a very successful writer, but I never would have asked. I'd consider that uncool and unprofessional. BUT. She's a sweetheart and, frankly, I only have two people to exchange work with. Plus, she's not asking as much as just hinting strongly. And what if I, well, really don't like her book? I'll probably just email my agent and ask her, but I wondered how others had handled the situation. Thanks for any shared experience.