I liked how Hitbox handled Segments.  You have to wait 24 hours once you create it, but then you can come in at any time and browse the entire application, looking only at that segment. Seems Omni could make the differentiator with Discover as being real-time vs. 24 hour.

Most bots/spiders do not execute Javascript.  However, I was also under the notion that Omniture automatically handled the remaining ones that do.