[docs] circumvention questions

docs/circumvention.rst

@@ -19,7 +19,8 @@ Obfuscated bridges
 -----------------------------
 
 At the moment RiseupVPN offers obfs4 transport "bridges" (you can try them with
-the `--obfs4` command line argument, or by checking the "use obfs4 bridges" checkbox on the preferences panel.
+the `--obfs4` command line argument, or by checking the "use obfs4 bridges"
+checkbox on the preferences panel.
 
 If you know you need bridges but the current ones do not work for you, please
 get in contact. We're interested in learning what are the specific censorship
@@ -36,3 +37,19 @@ using a socks proxy etc...
   ~/.config/leap/riseup.net.pem
 
 When the certificate expires you will need to download a new one.
+
+Help us improve circumvention!
+------------------------------
+
+We're very interested in working with people on the field to assess the
+effectiveness of these (and possibly other) measures. If you want to help us
+with these task, please write to us or feel free to open a new, confidential
+issue, with details of what is working and what not:
+
+* Are the obfs4 bridges working from your location?
+* Do they work with the desktop app, android app, none of them? One but not the other?
+* At the moment, Riseup has 2 different obfs4 bridges: does it work with one, both, or none?
+* Does setting a certificate manually work for you?
+* Were things working before and not anymore?
+* Are the failures intermittent, even with the same ISP?
+