I have often put type on a path in InDesign and then chosen a different "Type on a Path Option". (The default is Rainbow.) The other options look fine if that's the look I want, but when I choose the gravity option either nothing happens or aaargh … click that one away. The problem was I had no idea what it was doing to the type.
Until the other day I came across this podcast at www. mogo-media.com and was blown away. Rufus Deuchler also shows you the correct use of the drop shadow. Not as an effect behind type like 'I've seen on too many pizza take away folders and flyers.
Here's the link
http://www.mogo-media.com/podcasts/indesign/gravity_effect/
Thank you so much Mr. Deuchler