i want just to know how much posts and activities can i do now !? 
As much as you want, MadDog!
Just don't be a jerk about it. Be constructive with your comments. Help people here. Ask good, specific questions. Be a contributor. If you do those things you can post as much as you want.
Good luck to you!
You can make post by cliking oyur choosen topic and you can reply just like im doing everyday.
This doesn't answer the question.