Any from PSI on this list?

I can't seem to reach anyone at PSI who knows what I am talking about, so I thought I would try here. Lately, our connectivity to PSI has gotten worse; to the point where customers complaing about getting to sites from PSI. The thing is, PSI has a 'MEGA-PoP' about 14 feet away from me at 33 Whitehall Street, in NYC. I know PSI peers there with a few folks; are they adding? How do you become considered for peering with PSI? Thanks for your time.