diff --git a/docs/Phabricator.rst b/docs/Phabricator.rst
index 18b2817fc04..f5d289fc1a8 100644
--- a/docs/Phabricator.rst
+++ b/docs/Phabricator.rst
@@ -5,18 +5,29 @@ Code Reviews with Phabricator
 .. contents::
   :local:
 
-If you prefer to use a web user interface for code reviews,
-you can now submit your patches for Clang and LLVM at
-`LLVM's Phabricator`_.
+If you prefer to use a web user interface for code reviews, you can now submit
+your patches for Clang and LLVM at `LLVM's Phabricator`_ instance.
+
+While Phabricator is a useful tool for some, the relevant -commits mailing list
+is the system of record for all LLVM code review. The mailing list should be
+CC'd on all reviews, and Phabricator users should be prepared to respond to
+free-form comments in mail sent to the commits list.
 
 Sign up
 -------
 
+To get started with Phabricator, navigate to `http://reviews.llvm.org`_ and
+click the power icon in the top right. You can register with a GitHub account,
+a Google account, or you can create your own profile.
+
+Make *sure* that the email address registered with Phabricator is be subscribed
+to the relevant -commits mailing list. If your are not subscribed to the commit
+list, all mail sent by Phabricator on your behalf will be held for moderation.
+
 Note that if you use your Subversion user name as Phabricator user name,
 Phabricator will automatically connect your submits to your Phabricator user in
 the `Code Repository Browser`_.
 
-
 Requesting a review via the command line
 ----------------------------------------
 
@@ -113,6 +124,7 @@ Status
 Please let us know whether you like it and what could be improved!
 
 .. _LLVM's Phabricator: http://reviews.llvm.org
+.. _`http://reviews.llvm.org`: http://reviews.llvm.org
 .. _Code Repository Browser: http://reviews.llvm.org/diffusion/
 .. _Arcanist Quick Start: http://www.phabricator.com/docs/phabricator/article/Arcanist_Quick_Start.html
 .. _Arcanist User Guide: http://www.phabricator.com/docs/phabricator/article/Arcanist_User_Guide.html