I sometimes have trouble getting the TypePad ComBox to accept my comments. Others have had this problem. I get the error message: "Sorry, this data cannot be accepted.' By fiddling around, I have discovered that doing one or more of the following will trigger the system to accept data. (1) Make a minor alteration in the text. (2) Resubmit your name and e-mail address. (3) Copy your comment, open the blog in a new window and input the data via the new window. It seems that problems arise if you leave the ComBox open too long in a given window or take too long composing your comment.
What I have yet to figure out is how to make full HTML functionality available in the ComBox.