It’s a well-known fact that the Deaf Community is a small one. Buddies help buddies with everything from moving out of your apartment, to sending insider job referrals. That being said, don’t let your loyalties get in the way of being a fair reviewer.
It’s totally cool to “like” your friend’s new business page, but please don't write a five-star review of your friend’s new café if you don't have firsthand experience sipping their coffee.