diff --git a/GSoCIdeas2010.md b/GSoCIdeas2010.md
index 4dbbd0a..e3e6f7a 100644
--- a/GSoCIdeas2010.md
+++ b/GSoCIdeas2010.md
@@ -40,7 +40,9 @@ It may also provide more features for Firefox users or developers, which feature
 
 Brian Warner, the most prolific contributor to the Tahoe-LAFS codebase and one of the leaders of the Tahoe-LAFS project and a Tahoe-LAFS GSoC Mentor is also an employee of Mozilla Labs who works on the Jetpack SDK full-time, so he would be an excellent Mentor for any student interested in this project.
 
-## Medium-Sized Distributed Mutable Files (MDMF)
+## ~~Medium-Sized Distributed Mutable Files (MDMF)~~
+
+*(Kevan Carstensen has implemented this project.)*
 
 Mutable files in Tahoe-LAFS have some significant limitations and
 performance issues, as discussed in