Unless something has changed drastically, the point of that rule is not that so WotC can steal your ideas.
I house rule that HP damage is actually physical damage, and not some abstraction!
Take that, WotC!
To post a non-hysterical/non-conspiracy interpretation
That said if you wish to do professional game design you probably shouldn't be posting it on the internet freely anyways.
Might want to note that WotC claims intellectual property rights to anything posted here.
And yet, it lets them. Intent is often not a mirror to function, and professionals do not all possess honor beyond reproach. Evidence of this can be found in the news daily. Thus, if you value your intellectual property, you should not post it here.
I for one welcome our new intellectual overlords and would like to remind our new masters that they will need someone to whip their forum slaves as they toil in the new idea mines.
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... That said if you wish to do professional game design you probably shouldn't be posting it on the internet freely anyways.
D&D Home Page - What Monster Are You? - D&D Compendium
To post a non-hysterical/non-conspiracy interpretation:
This is a lot like how published authors refuse to read fan submitted material because it opens them up to plaigarism charges. There was already someone on the 4th edition forums who was claiming that Mike Mearls took the 4th Ed Marking mechanic from something he wrote.
There will always be people who are convinced that Wizards is raiding the board to steal ideas from hard-working users but it's kind of absurd. That said if you wish to do professional game design you probably shouldn't be posting it on the internet freely anyways.
Yes, it lets them. However, I'm not quite sure how often they have used it. Do you know of any specific points where WotC obviously stole anything off of their forums?
Your posts seem to be accusing WotC of being plagiarists, or supporting plagiarists.