Initial removal of cookies did not work, but days of reworking page cache and other updating has resulted in a renewed ability to view new posts, to make them, and no immediate problems. I keep getting a 'clean slate' effect, then a blocked wall of obstruction just to this blogs content. There is no other web site with loss of content that I can find, but my HDD is full here, and that is a bad sign of near failure here unless daily cleaning is done.
Try simply recycling your browser, computer, or even renewing your ISP assignment, if DSL is involved.
Removing cookies from marsroverblog.com is also possible, with most browsers.