As a developer/DBA I will admit I don't usually vet the responses I use. I use other people's posted replies quite frequently (today I looked for one to solve my "Transaction context in use by another session" problem without luck) and, though I always test the solution on my local/test database, and only use it if I understand it, I almost never vet it because:

(a) It was due to be done yesterday

(b) If it breaks in 2 years time it'll be me that fixes it again.