diff --git a/WeeklyMeeting.md b/WeeklyMeeting.md
index 9d26729..c9f5197 100644
--- a/WeeklyMeeting.md
+++ b/WeeklyMeeting.md
@@ -18,18 +18,48 @@ There is a weekly videoconference using [Google Hangout](https://www.google.com/
 
 ## Etiquette
 
-* It's okay to talk about things not on the pre-arranged agenda. (But it helps to announce in advance if you know there's something you'll want to talk about! It encourages other interested people to prepare and helps them avoid accidentally missing a meeting that they really would have wanted to attend.)
+* It's okay to talk about things not on the prearranged agenda. (But it helps to announce in advance if you know there's something you'll want to talk about! It encourages other interested people to prepare and helps them avoid accidentally missing a meeting that they really would have wanted to attend.)
 
 ## Upcoming
 
-Date: 2013-05-30
+Date: 2013-06-20
 
-URL: <https://plus.google.com/hangouts/_/b0df51e63a119cd96eb95a0bfc4883cb0cc678e5?hl=en>
+Agenda: Mark Berger's improvements to immutable peer selection.
 
-Agenda: Nuts and Bolts
+To prepare:
+* understand Tahoe-LAFS.
+* read [Kevan Carstensen's master's thesis](https://tahoe-lafs.org/pipermail/tahoe-dev/2013-April/008153.html).
+* look at [Mark's 1382-immutable-peer-selection branch](https://github.com/markberger/tahoe-lafs/commits/1382-immutable-peer-selection).
 
-Write some patches for Tahoe-LAFS v1.11!
+This will be a *"NUTS AND BOLTS"* meeting — it is about engineering, debugging, documentation, making stable releases, etc.
 
+If you're more into science, big new features, writing papers about our work, etc. then stay tuned for a future meeting about *"TESLA COILS AND CORPSES"*.
+
+<!---
+This will be a *"NUTS AND BOLTS"* meeting — it is about engineering, debugging, documentation, making stable releases, etc.
+
+If you're more into science, big new features, writing papers about our work, etc. then stay tuned for a future meeting about *"TESLA COILS AND CORPSES"*.
+-->
+
+<!---
+This will be a *"TESLA COILS AND CORPSES"* meeting — it is about science, big new features, writing papers about our work, etc.
+
+If you're more into engineering, debugging, documentation, making stable releases, etc. then stay tuned for a future meeting about *"NUTS AND BOLTS"*.
+-->
+
+## Proposed Future Topics
+
+* **Noether status report** by Daira *("TESLA COILS AND CORPSES")*
+* **Rainhill design review** which Daira will distribute; call for outside crypto expert reviewers *("TESLA COILS AND CORPSES")*
+* **Proof-of-Retrievability In The Presence Adaptive Adversaries** by Zooko *("TESLA COILS AND CORPSES")*
+* **Awesome Generalized Authenticated Data Structures, Part 2** by Andrew *("TESLA COILS AND CORPSES")*
+* **Awesome Generalized Cryptocurrencies, Part 2** by Brian *("TESLA COILS AND CORPSES")*
+
+## Notes / Archives
+
+### 2013-05-30
+
+* *("NUTS AND BOLTS")*: Agenda: "Write some patches for Tahoe-LAFS v1.11!"
 
   * Leif's recent patches to the WUI
     * #1973
@@ -60,35 +90,6 @@ Write some patches for Tahoe-LAFS v1.11!
     * #1499
     * #277
 
-To prepare:
-* understand Tahoe-LAFS
-
-This will be a *"NUTS AND BOLTS"* meeting — it is about engineering, debugging, documentation, making stable releases, etc.
-
-If you're more into science, big new features, writing papers about our work, etc. then stay tuned for a future meeting about *"TESLA COILS AND CORPSES"*.
-
-<!---
-This will be a *"NUTS AND BOLTS"* meeting — it is about engineering, debugging, documentation, making stable releases, etc.
-
-If you're more into science, big new features, writing papers about our work, etc. then stay tuned for a future meeting about *"TESLA COILS AND CORPSES"*.
--->
-
-<!---
-This will be a *"TESLA COILS AND CORPSES"* meeting — it is about science, big new features, writing papers about our work, etc.
-
-If you're more into engineering, debugging, documentation, making stable releases, etc. then stay tuned for a future meeting about *"NUTS AND BOLTS"*.
--->
-
-## Proposed Future Topics
-
-* **Noether status report** by Daira *("TESLA COILS AND CORPSES")*
-* **Rainhill design review** which Daira will distribute; call for outside crypto expert reviewers *("TESLA COILS AND CORPSES")*
-* **Proof-of-Retrievability In The Presence Adaptive Adversaries** by Zooko *("TESLA COILS AND CORPSES")*
-* **Awesome Generalized Authenticated Data Structures, Part 2** by Andrew *("TESLA COILS AND CORPSES")*
-* **Awesome Generalized Cryptocurrencies, Part 2** by Brian *("TESLA COILS AND CORPSES")*
-
-## Notes / Archives
-
 ### 2013-05-02
 
 * *("TESLA COILS AND CORPSES")*: Agenda: "Post-LAFS: What would you invent (or are you inventing) now that you already understand Tahoe-LAFS? Possibilities: LDMF (fancier authenticated data structures), Brian's secret file-sharing project within Mozilla, BitTorrent Sync, saying 'Okay, storage is good enough, let's work on decentralized currencies/payment-systems instead.'"