Updated with a corner case

README.Salsa.md

@@ -12,3 +12,9 @@ Since nm.debian.org is (almost) a gatekeeper for LDAP, the information should
 still be valid. "Almost" means that DSA can still create LDAP accounts without
 passing through nm.debian.org, and nm.debian.org would not know anything about
 them, but that happens rarely if at all.
+
+A possibly annoying corner case is if someone goes through NM using the
+cert-based SSO and not Salsa, then they very likely won't show up as Debian
+Developers on Salsa. Logging into nm.d.o with both accounts will establish the
+connection and likely generate the badge the time Salsa fetches nm.d.o
+information.