can I bet on behalf of girlbtc.com
that account is banned for 3 days for his last post with adv bar on this thread
According to BadBear yes you can place bids on this thread.
If you continue posting outside of meta while banned, your ban length is going to be extended significantly.
You may post in the auction thread only.
It would probably be best to only place your bid and not comment when placing your bid. You can look at the bids placed on his page for examples of appropriate bid posts.