As an iPod Touch owner, iPhone OS 3.0 enhancements such as MMS, and copy/paste aren't as relevant to me as the subtle improvements Apple has made to media playback and search.
New features such as music search (distinct from Spotlight), fine track scrubbing control, podcast e-mailing, and an expanded iTunes storefront, won't grab many headlines but they're certainly welcome additions to an already excellent product.
To make my point, I've put together a slideshow and video of some of the less-appreciated improvements iPhone OS 3.0 has given to media junkies like myself.
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