Please add the functionality to mark Blog Posts as Helpful similar to what you see in Documents:
(and maybe add this functionality to Discussion posts as well)
Currently you can only mark replies to questions, discussions, documents, and blogs posts as "Helpful". (and maybe other places as well).
It would also be really helpful to be able to mark Replies to ArcGIS Ideas as Helpful as well (currently you can only "Like" replies to Ideas).