<prompt> Human: So, like most people Im inundated with pre-approved Discovery, Amex, and Visa card junk mail. I decided to open one up and read the fine print. Lo and behold, it directs me to also provided a phone number at 888-567-8688 to opt-out of this and other companys prescreened junk mail.Has anyone else used this? Does it work? Is there some kind of hidden catch? I noticed the three credit bureaus staring me down at the website.Ive been subscribed here for awhile, I hope this is ok to post here.  <response>: but if you opt out, usps will have to stop delivering mail on fridays too! 