After reading a little about Reset The Net, I got to thinking that it might not be a bad idea to order an SSL certificate for this site, and put, at least, the admin stuff behind SSL. (I never really thought about it much with Blogger, but of course the blogger.com admin interface was always behind SSL.)
So I went ahead and ordered a cert from my host, 1&1. They charge $30 for the first year, and $50 per year after that. So it’s not the best price, but it’s not horrible. It looks like I don’t need to do anything special to set it up, just click a few buttons and wait (then click a few more buttons).