Thanks, Lori Anne for taking the time to provide feedback. Let me explain, please.
I suppose I need to reword the web site, because I intended to convey my willingness, indeed pleasure, to provide my resume. But I am also concerned about privacy and identity theft, and thus ask that anyone who wants the details on my life at least give me their e-mail address. My thought is that if someone is unwilling to share even that with me, then they probably are not genuinely interested in my work, or have some nefarious motive for wanting my personal information. The statement about the mailing lists also reflects my privacy concerns. I don't like getting unsolicited e-mail, and do not want people to think that I will abuse the privilege of having their e-mail addresses.
On the other hand, I have taken your advice and added a page that lists my shows and participation in juried exhibitions. [after the post below]
On the topic of newsletters and social media: I have a newsletter that I send once or twice a year to customers and selected curators and galleries. When I started out, I sent the newsletter to everyone I knew. However, I noticed from my web site analytics that essentially nobody aside from the established customers and occasional curators or gallery personnel was visiting my web site via the newsletter link. Similarly I knew that in 18 months of being on Facebook, not only did I get zero sales, but also zero web site hits via that medium. I came to the conclusion - along with a number of Fortune 500 companies, by the way - that social media like Facebook and Twitter are good ways of sharing information with your pals, but useless as sales generating devices. Better to spend some money from time to time to advertize in something like Art News.
Re the mixed media page: The links are already there. If you run your cursor over the category name, you'll see that it's a link. Maybe I should change the color of the font to make it obvious.
Thanks for the advice on wording with regard to pricing. I've changed it, and added the usual prices subject to change without notice blurb.
Finally, regarding print size; my printer is set up in millimeters. More importantly, a majority of the people who have bought my work live in countries where the metric system is in use, so it makes additional sense to cater to them. Maybe I am wrong, but I expect that anyone visiting my site can divide by 25, if not by 25.4, and so can convert from millimeters to approximate (or exact) inches if they need to. Stylistically, I find it unappealing to write something like 600 x 400 mm (23.62 x 15.75 inches). But maybe you are right, and certainly H.L. Mencken would agree with your point ;-)