The reason why you can't comment at this point on the Official Announcements, is because we have chosen to close the comment system on this section. Mostly because that area is only for you to read, not a discuss forum.
There is a possibility that we will open this again. Then you will be able to comment on specific articles.
Hope this answer your question. If there is anything else, please let us know.
Official EXCE Community Manager - We never ask for passwords.