5 posts is fair, but I would have liked some notification of this when I signed up. I thought I was going crazy when I was unable to reply to threads. I had to Google it to find the newbie forum that said you needed to do 5 posts in here and then wait some hours. I agree with it, but it should have been more clearly stated in the signup process.
I been lurking the Custom Hardware section (specifically the ASIC stuff) for a while and wanted to provide some input in to the TerraHash thread. I decided to register to comment, but then found out my account is read only. Good think I decided to Google why and found this thread.