Typography is not my strong suit. It's almost nobody's strong suit, which is fine by me. I don't know a really good font when I see one, and I don't care that much. I'm sure it's all critically important, but to most of us it's just navel-gazing.
When someone points out a really glaring typographical error I might take notice, and agree. “Widows” for example, are apparently an affront to typographical good taste everywhere. I wouldn't typically go too far out of my way to avoid them. If it was easy, maybe. As it turns out, it is easy. Shaun Inman has written the Widon't plugin for WordPress. Just dropped it in, and now at least my post titles will be sans-widows. Happy now?