Well, I just successfully searched for "diskwarrior" there, so it apparently isn't a 100% reliable failure, if it is OmniWeb's fault. That said, I was just trying to post a comment at
MacSparky's website, and kept getting that same error message most times when I clicked on Preview or Submit, but hadn't gotten around to trying from a different browser. Whatever the root cause, it is frustrating (especially when one loses the text of the post)...