I don't have a clue. For about 2 days my Comcast stuff was really flaking out. I was getting Red X's all over the place. I went ahead and posted them and eventually they would come to life. That's never happened before to me. Usually they always preview/post trouble-free. It's finally settled down now, or seems to have.I am surprised with Geocities. My guess (gut feel) is that the threads you've posted to are not getting a lot of 'hits' and maybe Geocities hasn't been affected with the posts.
I know so little about the technical stuff ...