I have randomly checked out other themes and they all have fonts that are too small when I preview them. When I first published, the font size was good, but I noticed yesterday they changed. When I went into edit and then into HTML, I spent considerable time changing "font size: x-small" to "font size: 12px". When I clicked on preview changes, it seemed to be working. However, when I returned to the edit screen (by hitting the back arrow in upper left hand corner of the screen), the code reverted back to x-small. It's no wonder people don't read my blog. I can't read it myself!