Text for the most part, with an [Archive] hyperlink at the end like I usually do.
In part of the text I was trying for 2nd level indented bullets ">>- " in the post content this morning and hit [preview] to confirm the result before posting - and it hung up, preview button faded and stayed that way. It was the first time I'd [preview]'d a post today before posting. I tried [preview] on some other posts later in the morning and it continued to hang up.
I'm going to delete cache and restart this kindle because it's due.
Fixed!
Thanks for the report.