I have as much anxiety about posting as I do about talking to people I've never met (A lot). I feel uncomfortable with two word responses "nice work", "I like it". I am not an artist and have no art of my own. I don't feel like I have anything to say, and if I do, I don't know that anyone wants to hear it.
I mainly do the same thing, though I do comment sometimes on porn that interests me, even if it's not something new to the conversation, some comments are better than no comments.
I don't know if there are a lot of lurkers or just very few users who specifically stay within the instance. I have my sorting by new comments and it's only rarely anything from Yiffit actually rises to the top :(
Pawb seems a bit more active. Even the porn communities here are not super active. But I'm not leaving cuz I like the intentions behind the instance being a little more adult, since the furry communities in Reddit were so full of children and I want to hang out with furries my own age; not little kids.
I'll comment on the occasional porn post here on yiffit, but I reserve my commenting here mostly to discussion posts like these, haven't seen many of them around though. Should really get to posting some sometime, I'm mainly here for that as I do my porn consumption elsewhere.