I've come across sites that are aimed solely at the pro, or budding pro. Unfortunately, most of these are pay sites as well. While that may be a good way to weed out the impostors, it's not very welcoming either. Pete certainly has a point...as does Mr. Bautsch.
Internet forums are designed to be open, at least most of them are. You enter some basic info, and you can post your thoughts on just about anything within a matter of minutes. Letting every Tom, Dick, and Harry post about business matters is something different altogether though. It dilutes the real information, and corrupts the value of the forum. Up until a few days ago, I had never posted in, or even looked at the D300s forum because I didn't own one. It wasn't relevant to me. I think most people are that way, but there are some who aren't. If Harry isn't in business, and has no desire to do so, I could care less what he has to say about business matters. And again, I think most people are able to filter out Harry's posts on certain topics and take them at face value...but others are not.
Some of the other forums that I visit have pro photog sections, and they're free-for-alls. They're a mess. I think that could easily be avoided by having access to that section password protected. I'm not saying we have to run background checks, but someone who has 3 posts in 6 months should not be allowed access. This is 2011. Anyone who is serious about being in business is going to have a website. Approving access to a locked forum would be a fairly simple task.