It depends. If it is someone who loves to plan and research, and has actually asked how I knew about the stuff I did on my last trip (BOG FP+ for lunch, which resort rooms sleep 5, park hours since it was kind of an "off" time of the year, etc), AND had at least a year or two to read on here before their trip, I would direct them here.
Since that rules out 80% of my family and friends, and 100% of DH's family (LOL), I would keep my mouth shut and not say a word. I loved reading these boards YEARS before I actually planned a real trip, and felt as though I lived vicariously through the trip reports/dining reports/etc, so for me it was entertainment. I actually became a member several years later when I finally was able to book our first trip, which of course allowed me to ask questions. BUt by then, I already had many years of "experience" here.
That being said, the first time I walked into MK, I was almost scared to break a "DIS-rule" just incase there was someone near me from these boards who might report it to everyone LOL DH walked into a line before I had parked the stroller and several people walked in behind him. I was terrified to say "excuse me" to them so I could catch up with DH. I kept saying no to him motioning me over, but all of the people were super nice and told me to go ahead and go through.
I was very concerned about where to put the stroller for Wishes because I didn't want to block anyone's view. Little did I know that it woouldn't matter because as soon as wishes started, a man set his tripod up literally 6 feet in front of us. Sigh. I WISHED for a DIS-er at that point!! LOL
What I learned, and the reason I don't direct many people here, is that when a person really, truly loves something, they put their heart and soul into it. It becomes very, very personal to them. They will argue about strollers for 6 year olds, who is sitting at a CS table without food in front of them, whose kids were taken out of school for how long when there is a perfectly good summer vacation to wait for, why Ohana cannot seem to figure out the right degree of doneness for their meat, or how in the world ANYONE could even THINK of stuffing 5 people into a POR AB room on their VACATION!! (gasp!!!).
As much as I enjoy these boards, I would not wish for anyone I know personally to have to deal with all of these first-world problems when planning their vacation!!