This is my first post here but I just had to reply, after reading this board for a long time. Sometimes, people are first-time travelers, and would like the experience of someone who just went somewhere for the first time (like, say, driving in Italy. I drove there for my first time a while back and reading experiences of other first-time drivers was a lot more helpful than people who had done it 20 times). In those cases, it's probably "veterans" who aren't really all that helpful at all.
Also, I have seen many discussions recently where people were attacked by "veterans" for merely asking for clarification or even not giving an opinion at all, just posing a simple harmless question that people misread as an opinion. A few years ago this board was never like that. Only recently have I seen personal attacks. That's quite a shame. I have also seen many situations where "veterans" say things like, you have to do this or stay here, without taking into account the person's desires, travel goals, likes/dislikes, etc. That can also be really un-helpful.
Greg, you say you are talking about situations where people actually say they haven't been to the area - don't you have enough faith in the intelligence of other posters to read what people say and absorb the information given accordingly if the person says they've never been there? If someone says "I've never been to London but I would stay at hotel X if I went," I would hope someone would be smart enough to not pay much attention to that, or whatever. Same if the trip was 15 years ago, etc.
The point of this board is for a traveler to gather opinions, do research, and make plans based on his/her own wishes. Obviously it's not OK if people lie and give false advice, but Rick doesn't strike me as the type of guy who wants to restrict the free flow of information and discourse. How about relax a bit and let people's own intelligence decide what advice they heed and what they don't.