There have been several non joomla.org blog posts about the current situation of the feed content appearing in Joomla Connect.
To this end, without giving several URLs to the many blog posts appearing questioning why their posts have been removed and in some cases dropped altogether, here are some reasons.

So far I have taken a step back approach to (mostly spam) reports on the Joomla Connect Feed. However I and many others will now be a bit more vigorous on the feeds and posts.

Those that don't comply with the terms of carrying the feed and posts will be removed.

Please note that acceptance of a feed does not guarantee that all posts from that feed will be published on JoomlaConnect. Individual items may be unpublished at the discretion of the Joomla Site Team

When you put your feed request in, you agreed to it and were reminded of it when we informed you that your feed had been added.

Other points to note.

* While it is not up to the connect to dictate the content of the feeds coming in, we have the right not to carry that feed. Whats to stop people just feeding any old rubbish our way or mentioning the word joomla?

* IF people actually reported the bad feeds, then it would help!

Yes, it can be seen that people will flood the feed with their latest minor version update news everyday, or announce their training course, then remind you and then tell you the tickets are sold out. But keep it in the spirit of Joomla.

Again - if you see a bad post or feed in one of the many languages I do not speak report it within the spirit of being part of the Joomla! Community!
Please see

https://community.joomla.org/connect/get-connected.html

if you have any questions.

(editted to reflect change of working group name)