diff --git a/GSoCIdeas2010.md b/GSoCIdeas2010.md
index 59fb7bd..4dbbd0a 100644
--- a/GSoCIdeas2010.md
+++ b/GSoCIdeas2010.md
@@ -154,8 +154,8 @@ and is practical to support in the time available. For example, locking
 is optional in the WebDAV spec; is it needed to interoperate with commonly
 used WebDAV clients?
 
-Unlike most filesystems which are constrained to be trees, the structure
-of a Tahoe is in general a cyclic graph.
+Unlike most filesystem directory structures which are constrained to be trees,
+the structure of a Tahoe filesystem is in general a cyclic graph.
 [draft-ietf-webdav-bind](http://tools.ietf.org/html/draft-ietf-webdav-bind) is
 an Internet Draft that clarifies how WebDAV servers should handle cycles.