Would it be possible to make the Locomotion Forum harder to access for newbies, perhaps by password protection or some sort of quiz you have to do before getting into it? Or perhaps allow only people that have made more than 10 serious posts to get into it? Turning off smilies there would be a good start, especially this little guy:

My reason for asking is that it has been invaded constantly by trolls and spammers over the last couple of months either requesting vehicles that are already available for the game, making requests without following the guidelines, bumping requests after a day or so because no one makes what they want, asking stupid questions that could be answered by searching, generally making spam posts or even simply being rude about everyone else because they refuse to follow the forum guidelines.
I suspect some of these trolls are re-registering themselves under new usernames simply to spam again without being banned as well. This is really having a detrimental effect on the forums - the atmosphere there is really getting worse because the established users are getting really frustrated about the level of spamming, and I worry that this could eventually kill the English speaking Loco community off. I don't get much spare time to play Loco myself, but it is still nice to have somewhere to talk about and get ideas for the game, and I like creating scenarios when I get the time - I feel it would be a shame if this outlet was gone because of a few idiots that are spoiling it for people.