The PM facility was removed several months ago.
There was around a months notice given along with a full explaination, it was in a prominent position, and there were many subsequent posts about it.
Goodness knows how you all missed it. :
You can't have used it that much otherwise you would have become aware of its removal far earlier.
You can have your e-mail address on your profile, and this will allow communication between the parties that wish to do so.
Those that keep polluting this forum with frequently repeated questions will be pleased to learn that the 'Search' facility is still here. It's just between the 'Help' and 'Profile' icons...