From the FAQ:

Posting links -- be sensible! If someone asks about a shop in a location and you know of one, you can post the name of the shop but no other identifying info (no address, no phone number, no directions, no link) If someone wants more info they can PM you to ask for it. You MAY NOT post asking people to PM you. People can PM and you can reply, but without the public "I've PMed you/Can you PM me?/I've replied" posts.
This was removed by a Mod yesterday after complaints that the PM me/I'll PM you/I've PMed you posts were again getting silly. I'm now replacing the thread in the forum, but closing it. The info is there. If you want info PM the poster and keep it all behind the scenes.