As far as I read, the restrictions were only introduced because of heavy trolling. And my experience tells me that a troll can find even better satisfaction in screwing existing discussions than in establishing new ones.
Don't think this is such a good idea... But the mods/admins will have more experience with them trolls

I don't see how these restrictions (5 posts + 8 hours online) will prevent massive trolling. It is quite easy to make a bot which will keep newly registered profile online to take required nubmer of hours and post few sentences in this section.
I didn't said that those will prevent trolling. In fact a troll wouldn't need a bot at all cause he would be sitting bored in front of his pc anyway.
Now that i read about the decrease from 50 to 5 posts, my interest in discussing this topic in here is suddenly practically zero... hehe