Trouble posting comments...still

And when you are asked "posting comments as", which choice do you choose? I can write a comment, but no matter how I choose to post as, my comments disappear....does anyone else have to "post as"? I tried to find something about it in settings, but I couldn't. If someone can help, please call me! Also, Chad, I did a blog piece on my other blog, Desert Dispatches on the Obama wiretapping ad the Eff (love that foundation!!!) My post is called "If you loved warentless wiretapping under Bush, you are going to love Obama's", or something of that nature...I have been following this issue for awhile....love all ya'll!