diff --git a/doc/forum/use_case:_unique_indentifier_of_objets___40__doi_like__41__/comment_2_0aff36755f49afddd5482a602a1ccd2b._comment b/doc/forum/use_case:_unique_indentifier_of_objets___40__doi_like__41__/comment_2_0aff36755f49afddd5482a602a1ccd2b._comment
new file mode 100644
index 0000000000..2ef754f163
--- /dev/null
+++ b/doc/forum/use_case:_unique_indentifier_of_objets___40__doi_like__41__/comment_2_0aff36755f49afddd5482a602a1ccd2b._comment
@@ -0,0 +1,10 @@
+[[!comment format=mdwn
+ username="https://www.google.com/accounts/o8/id?id=AItOawmTNrhkVQ26GBLaLD5-zNuEiR8syTj4mI8"
+ nickname="Juan"
+ subject="comment 2"
+ date="2014-07-09T15:32:49Z"
+ content="""
+If I get this right, the key will change every time the file is changed.
+If that's the case, seems that it won't be useful for my case.
+Thanks for the time.
+"""]]