Here are a few things to keep in mind for broadcast lower-thirds:
Keep all text inside the safe title area.
Avoid fonts with thin serifs – generally stick with sans serif fonts.
Avoid highly saturated reds – NTSC HATES reds.
Keep your whites to around 235-235-235. 100% white may cause audio problems.
Avoid all caps unless it’s for very short bits of text.
Keep your lower thirds short. Don’t take five words to say something if you can say it clearly with two.
Mark Landman
PM Productions
Champaign, IL