diff --git a/inbox/rsf.xml b/inbox/rsf.xml
index e0eb421a..9d40f26a 100644
--- a/inbox/rsf.xml
+++ b/inbox/rsf.xml
@@ -23,7 +23,6 @@
The most actual example of the problems that are beget with these disadvantages is the &xep0277;: you won't be able to subscribe to a user's blog if he doesn't want to read your blog as well. This will be a big problem for popular bloggers that can't read all the feeds of their readers.
+Another one is a bot which want to gather information from a lot of users. For instance, we can want to write a bot which gather geo-location from a lot of devices, then it will subscribe to these devices but they may not want to do so. The new protocol will allow such bots to operate this way.
+Also, some clients may want to receive retract items events to appropriately update their feed data storage but some other clients may not want to store feeds at all and just show the recent events and corollary don't need in these events. This standard allows the first one to receive those events and the last one to get rid of them saving traffic, regardless of node settings which can be configured solely by the node's owner.
The new protocol is needed to solve the stated problems that will allow to move the notifications filtering process from the sender side to the recipient side, that will allow us to filter them in a more sufficient way. Also, we must care of:
+The new protocol is needed to solve the stated problems that will allow to move the notifications filtering process from the sender side to the recipient side, that will allow us to filter them in a more flexible way. Also, we must care of:
When using this protocol to deliver notifications, the server MUST follow these rules:
If a server receives such an event to its bare address it MUST process it as described in &xep0033; copying the message to the necessary recipients and removing the "bcc" addresses from the stanza.
+Recipient server is responsible now to filter out and broadcast that messages with events that were request by each user's resource.
As described at &xep0060;'s "Filtered notifications" section, client should add payload's NodeID and "+notify" postfix to tell which types of content it can and want to process.
@@ -141,4 +148,3 @@This protocol doesn't define any XML stanzas.