I haven't had those specific problems, but I do notice now that ads/links are appearing within the text of the first response to any question.
I also have had the problem (and have seen others post the same) that they were in the middle of typing a response (often a long one) and had it disappear. I now write most of my responses in Word, then copy and paste it; if it disappears, I can go back to my Word document and repeat.
I also noticed some responses disappear from a question I posed. I read them, then went back later when a few new responses showed up, and found the earlier ones were gone. It was not a controversial post - it was about cooking - so I doubt they were removed by either the moderator or the responder.
The other thing I notice is my inbox has a "Mamapedia Daily" email each day, but it's usually just a blog with no questions. Only if I go to an old email and click "see all of today's questions" can I get to the questions. The other day a question did show up in the Mamapedia Daily email, but it was weeks old and had 30 responses! I can't figure out why I virtually never get an email with a question or two listed.
I can't explain any of it!