(hopefully our regularly-scheduled programming will resume soon. It’s been a busy summer.)
When you make your “free” font available only for “personal use” you not only guarantee that I shall not download your font, because I cannot keep track of who lets me use their fonts for what purpose, you thereby guarantee that your font will not make an appearance on the television spots my work appears in, the big-name web sites I work on, the small-name web sites I work on, or any other commericial work that might actually cause people to see your font. If you’re not a big name font designer (and sometimes even if you are), making your work available for free gets your name and your work out there.
…Just a small message from my other life as a graphic designer-type-person.