eBay

i notice when i buy or sell other bidders are protected and names are blocked how can i do this?also how can i remove decsription/specifics in relation to items i have bought and sold on ebay .ie when going on feedback i would like to block the descr...

If i list items in a say august and it relists into septemnber does that take away from the amount of free listings in september or does it still count from august?thanks