diff --git a/content/feed-research.md b/content/feed-research.md
index a76bf7e..e6ad86c 100644
--- a/content/feed-research.md
+++ b/content/feed-research.md
@@ -59,6 +59,8 @@ to look into at a little bit more. I'll probably post about those on
   `xmlns:dm="http://www.dailymotion.com/dmrss/"`
 * [RSS 1.0 Email Module](https://web.resource.org/rss/1.0/modules/email/)  
   `xmlns:email="http://purl.org/rss/1.0/modules/email/"`
+* [Easy News Topics RSS 2.0 Module](https://web.archive.org/web/20160823230434/http://matt.blogs.it:80/specs/ENT/1.0/)  
+  `xmlns:ent="http://www.purl.org/NET/ENT/1.0/"`
 * [RSS 1.0 Event Module](https://web.resource.org/rss/1.0/modules/event/)  
   `xmlns:ev="http://purl.org/rss/1.0/modules/event/"`
 * FeedBurner extensions (`origLink` and `origEnclosureLink`)  
@@ -89,6 +91,8 @@ to look into at a little bit more. I'll probably post about those on
   `xmlns:icbm="http://postneo.com/icbm"`
 * [RSS 1.0 Image Module](https://web.resource.org/rss/1.0/modules/image/)  
   `xmlns:image="http://purl.org/rss/1.0/modules/image/"`
+* [includedComments RSS Module](https://web.archive.org/web/20050409060547/http://www.laudably.com/rss2-comments/1_0-proposal-2.html)  
+  `xmlns:includedComments="http://www.laudably.com/rss2-comments"`
 * [LiveJournal indexing extension](https://web.archive.org/web/20170801185513/http://www.livejournal.com/doc/server/ljp.int.xml_userdata.data_formats.html)  
   `xmlns:indexing="urn:atom-extension:indexing"`
 * [Apple iTunes Podcast RSS extensions](https://help.apple.com/itc/podcasts_connect/#/itcb54353390)  
@@ -133,6 +137,8 @@ to look into at a little bit more. I'll probably post about those on
   `xmlns:source="http://source.scripting.com/"`
 * [RSS 1.0 Service Status Module](https://web.resource.org/rss/1.0/modules/servicestatus/)  
   `xmlns:ss="http://purl.org/rss/1.0/modules/servicestatus/"`
+* [RSS 2.0 Simple Semantic Resolution](https://web.archive.org/web/20070228150045/http://dannyayers.com:88/xmlns/ssr/index.htm)  
+  `xmlns:ssr="http://purl.org/stuff/ssr"`
 * [RSS 1.0 Streaming Module](https://web.resource.org/rss/1.0/modules/streaming/)  
   `xmlns:str="http://hacks.benhammersley.com/rss/streaming/"`
 * [RSS 1.0 Subscription Module](https://web.resource.org/rss/1.0/modules/subscription/)