I can offer myself as an example. I have been reading about bitcoins for the last couple of days and have been giving some thought to buying some. I also wanted to offer some feedback to a forum member who has started a bitcoin giveaway site designed to help people like me 'get on the ladder' so to speak.
This policy absolutely drives me away as a matter of principle. This forum appears to be THE source for BTC related information and you are shutting people like me out who may occasionally want to contribute or offer feedback. I have no intention of making 50 posts just to 'earn' the right to play with the big boys.
Do you want bitcoins to gain wider acceptance or do you want it to be an exclusive club that can be entered into only by those 'in the know'? I get the impression of the latter at the moment.
I agree about the two leading paragraphs. But the exclusive club thing is meant to be exclusive in the sense of "no trolls". I think you as a "non-troll" will be whitelisted in minutes.
Maybe the following mechanism would be better: Anybody can post, but messages can be flagged as "bullshit" by "seniors" and when a member got a say 40% bullshit-rate it gets to this playground here. But then again someone would need to implement this.
Edit/PS:
Of course this bulletin board thing here is so 1990 at all...

It should be no problem to collect some 1k btc (The early miners got them in buckets, don't they?) and pass them over to a nice company which makes a nice page out of this, with automatic trade-reputation or even middle-man-system and stuff.