I've noticed that people are quick to vouch for a person. This is perfectly fine, and anyone can vouch, from anywhere. However, you must have had prior experience with the person you are vouching. No more "This guy looks good. I vouch". There really is no point in vouching for someone you don't know, and it just doesn't make it any easier to deny/accept someone. So no more. Don't give a person hope that may prove false, ok?
We've all done it, but it makes no sense to promote a bad habit.
This isn't up for discussion. Stop doing it please guys :P