https://twitter.com/search/realtime?q=%23moodleorg, where it was completely silent. A dot as in https://twitter.com/search/realtime?q=%23moodle.org made a big difference.
I'm not sure whether that is by design. ???
Yes, also seen this some days ago.
Good that you talk about it. Would still be better to create a tracker request
Actually, the tag #moodleorg is by design. As far as I know it was Martin who changed it from #moodle.org when he realised a dot (.) in a tag isn't recognised by twitter i.e. searching for #moodle.org returns the results of a #moodle search.
https://twitter.com/search/realtime?q=%23moodleorg currently has no results because moodle.org hasn't been down for a longer period for a while. Hopefully it will stay that way!