The reason we don't advertise this is because, if we did, admin would be inundated from users requesting the 10 post restriction was removed for them. Instead, we rely on the educated to think and work it out for themselves. It's been posted a fair few times in various threads and any "dev" coming from another forum with any brains would be contacting admin/mods to see if they can bypass certain restrictions....i.e. we don't want to open the floodgates to the stupid
yet it can take a new user less than an hour to achieve 10 posts by helping others
Didn't know it was mentioned in a few threads as i wasn't looking for it specifically and only came to know about it last month from the feedback thread, forgive my ignorance. I agree there will be an influx of noobs who would be requesting for it but it can be made a 'for developers' only form? Anyway i'm not really pushing for it now.
I usually ask new users (not no0bs) to just create a thread in general section whatever their purpose might be, be it an issue with a rom or a development thread itself, which can be moved later and they will also get their 10 posts in the process.
I'm willing to bet that the vast majority's first 10 posts are not
helpful ones...they just want to get it over with. But what i feel is that over the course of time they will be helpful (if they continue using xda) but no matter how many times you tell them to make 10 helpful posts initially, it won't happen. Because helping is not their intention, at that point of time they just want to get in. That is why i'm not a fan of the 10 post rule lately, prefer something better.
--edit--
+1 to what justmpm said. The 10 posts a new user makes are worthless mostly..not literal spam but far from being helpful.