diff --git a/README.md b/README.md
index 119212b..c240509 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@
 
 In partnership with [Firebase](https://www.firebase.com), we're making the public Hacker News data available in near real time. Firebase enables easy access from [Android](https://www.firebase.com/docs/android/), [iOS](https://www.firebase.com/docs/ios/) and the [web](https://www.firebase.com/docs/web/). Servers aren't left out; there's also [REST](https://www.firebase.com/docs/rest/) support.
 
+Please email api@ycombinator.com if you find any bugs.
+
 ## URI and Versioning
 
 The API is based at https://hacker-news.firebaseio.com.
@@ -117,7 +119,11 @@ For example: https://hacker-news.firebaseio.com/v0/user/jl.json?print=pretty
 }
 ```
 
-## Top Stories
+## Live Data
+
+The coolest part of Firebase is its support for change notifications. While you can subscribe to individual items and profiles, you'll need to use the following to observe front page ranking, new items, and new profiles.
+
+### Top Stories
 
 The current top 100 stories are at https://hacker-news.firebaseio.com/v0/topstories.
 
@@ -126,3 +132,28 @@ Example: https://hacker-news.firebaseio.com/v0/topstories.json?print=pretty
 ```json
 [ 8414149, 8414078, 8413972, 8411638, 8414102, 8413204, 8413100, 8413971, 8412744, 8414003, 8412841, 8412802, 8412605, 8413548, 8413123, 8414437, 8412897, 8413028, 8413341, 8412425, 8411762, 8413623, 8412346, 8411356, 8413056, 8413365, 8412372, 8414055, 8412877, 8412167, 8413264, 8414137, 8410519, 8412933, 8411846, 8412929, 8411254, 8411512, 8412777, 8412626, 8413274, 8414389, 8414117, 8412114, 8412212, 8412759, 8412696, 8412768, 8411643, 8411866, 8413966, 8410976, 8410545, 8410358, 8413979, 8414129, 8411791, 8409075, 8410314, 8411532, 8411553, 8412099, 8412085, 8410356, 8409084, 8412862, 8409823, 8412705, 8410220, 8409323, 8414090, 8410326, 8414206, 8411026, 8408298, 8407364, 8413066, 8412104, 8412235, 8412786, 8395689, 8414318, 8406384, 8414314, 8406507, 8408501, 8413630, 8414180, 8400778, 8413804, 8407298, 8413233, 8412601, 8411277, 8409940, 8414287, 8397750, 8412679, 8412727, 8413104 ]
 ```
+
+### Max Item ID
+
+The current largest item id is at https://hacker-news.firebaseio.com/v0/maxitem.
+
+Example: https://hacker-news.firebaseio.com/v0/maxitem.json?print=pretty
+
+```json
+8423374
+```
+
+### Changed Items and Profiles
+
+The item and profile changes are at https://hacker-news.firebaseio.com/v0/updates.
+
+Example: https://hacker-news.firebaseio.com/v0/updates.json?print=pretty
+
+```json
+{
+  "items" : [ 8423305, 8420805, 8423379, 8422504, 8423178, 8423336, 8422717, 8417484, 8423378, 8423238, 8423353, 8422395, 8423072, 8423044, 8423344, 8423374, 8423015, 8422428, 8423377, 8420444, 8423300, 8422633, 8422599, 8422408, 8422928, 8394339, 8421900, 8420902, 8422087 ],
+  "profiles" : [ "thefox", "mdda", "plinkplonk", "GBond", "rqebmm", "neom", "arram", "mcmancini", "metachris", "DubiousPusher", "dochtman", "kstrauser", "biren34", "foobarqux", "mkehrt", "nathanm412", "wmblaettler", "JoeAnzalone", "rcconf", "johndbritton", "msie", "cktsai", "27182818284", "kevinskii", "wildwood", "mcherm", "naiyt", "matthewmcg", "joelhaus", "tshtf", "MrZongle2", "Bogdanp" ]
+}
+```
+
+