Same, but also for the opposite reason: a new account gives me a chance to do better. If I post lame comments, I accept the lameness of the posts attached to a particular user name and the hesitation I feel to post more lame comments decreases. With a fresh identity, I am more likely to avoid lame posting sort of like how you avoid going out in the mud in brand new sneakers. A sort of repentance; being born again in the digital realm.