I'm just taking a guess here but I think it may have been something to do with the fact that you were posting things that people couldn't actively take part in discussing.
Maybe invent a game in the games thread that can be carried on by people? Or try asking a question or starting a "daft" discussion in the daft thread perhaps?
I may be totally wrong but thats kinda what i got from it. Don't worry, you'll pick it up soon and be fine