Morris,
Inline frames can be quite useful and chances are if you search the web often you probably have seen inline frames being used, but didn't relize it.
Browser support is fairly standard right now, but older browsers will not display inline frames properly (I believe 4x and below are the ones that don't support IFrames - but not positive).
I have used them for importing dynamic content from affiliates and also for asp maililing lists.
I don't use them all the time, but I also have no problem inserting an IFrame if I think it's the best solution to what I am trying to achieve.
JDR
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