Compare Joost and Hulu. Which one is more compelling?
Joost came out first, generated a bunch of buzz, and has a novel/interesting user interface. It’s also technically interesting, using peer-to-peer for distribution.
In contrast, Hulu came later and has a decent, sort-of-generic UI, but works entirely through the Web (no client, no peer-to-peer).
Why is Hulu so compelling? It’s content: they have stuff people actually want to watch.
Hulu is good enough that it threatens my DVR (particularly since I’m using a comcast DVR which is rife with technical and usability issues).