-dollar variables: $who - nick that caused the factoid to be retrieved
-dollar variables: $username - the username, not the nick
-dollar variables: $host - ...
-dollar variables: $channel - ...
+dollar variables: $who - nick of factoid requester
+dollar variables: $username - username of factoid requester
+dollar variables: $host - hostname of factoid requester
+dollar variables: $channel - channel from which the factoid was requested