I recently ran across a great post by Ilene Strizver on the CreativePro blog about how to avoid mistakes and maximize productivity when it comes to using fonts.
She posted her comments in response to the question “What are the most common typographic blind spots that you come across?”
Things like…
1. Ignored OpenType features
2. Underused Style Sheets
3. Overuse/misuse of tracking and kerning
4. Inattention to alignment
5. Dumb punctuation in onscreen typography