diff --git a/random.md b/random.md
index 160a6fa61..227020610 100644
--- a/random.md
+++ b/random.md
@@ -1,5 +1,5 @@
 # random
 
 - a [[site]]
-  - [[go]] random.org
-
+  - [[go]] https://random.org
+  - [[tetraspace grouping]] https://social.coop/web/statuses/106110832013718796
diff --git a/tetraspace-grouping.md b/tetraspace-grouping.md
new file mode 100644
index 000000000..c0cc6d278
--- /dev/null
+++ b/tetraspace-grouping.md
@@ -0,0 +1,5 @@
+# tetraspace grouping
+
+- a [[person]]
+  - [[schelling]]
+