Why is Audiogon insisting on a verified physical address in order to post?

Probably to help battle fraud.  Good idea!

It helps the Government to know everything we do......so the Government can help us.....Don't be a complainer.  What are you doing this very instant please Sir?

Why not simply fill out a help ticket and get the answer to your question directly from Audiogon; otherwise all you will be getting here is possibly speculative

@mc1969 "You will be" what?

I get that there is phishing here, but does requiring personal phone and physical address data to be inputted in a profile on a potentially insecure website solve the issue?  Just feels transgressive to me and I'm annoyed that I had to do it.

You will be. 

Spam, phishing posts

I haven't been asked to do that yet, but one reason might be to prevent serial troublemakers from rejoining under a different name after being banned.