Hi @nicoleryan. Sorry for contacting you like this, but I only found closed panels that I could not join to mention you there.
A while ago, you created some conversations with a topic of "Delta CS classes". Since then, I'm regularly seeing new conversations with single posts and no replies that probably should have been a post in one of the existing panels/conversations instead.
This might pose a problem, if your participants expect a reply that they don't get. Coming from Google+ myself, I also note that some of the screenshots you added to your conversations show private G+ communities (and I assume that the public ones were Ask to Join or Hold for Review?), whereas all conversations on Cake are publicly visible, even if they are panel discussions that only some people are allowed to join.
It might be worth pointing out to your people that they probably want to add a new post to an existing conversation instead of creating a new one - or at least should add an appropriate topic like "Delta CS classes" when starting a new conversation. Here are some recent examples:
@Cake team: I also added the "Cake feedback" topic, because all these separate conversations might be a sign of a usability issue when it comes to choosing between creating a conversation and adding a post to an existing one.