Is it ok to message other members to find out where a seller lives?

[kayne_80]

I won a projector 6 days ago and paid for it, I sent a message with the payment to let me know when he sends it. 

Then 2 days later I sent another message to ask if he sent it yet but again there was no reply.

On the 13th I looked at his other items and he had replied to a question about a macbook so I sent another message asking when he is going to send it because I am looking forward to receiving it. I didn't mention that I saw him reply to someone elses message.

Then today on the 15th he replied again to another question about the macbook so I sent another message saying that I saw both of the replies hes made to other people and asked why he is not replying to me.

Here is the projector I won

http://www.ebay.com.au/itm/320994477666

Here is the macbook where he has replied to questions

http://www.ebay.com.au/itm/320998268995

His items are all listed as pick up available from Norwood (Adelaide) 

So I am wondering should it be ok to message other members (possibly after they leave feedback) to ask for his address if they picked up the items?

If there is no reply in the next day or two I would like to go to his house and ask for it in person.

Any advice would help, thanks.