Nothing funny, it will have no ecosystem.

Let me explain in easy app terms...

iPhone has:

Viber - A fantastic VoIP app/service
Skype - With video
Firefox Home - Awesome! Sync bookmarks, history, etc.. one way(this is great)
iPod app - The best.
Tons of Feeds/RSS apps
Notesy - Sync notes with Dropbox
PhotoSync - Sync photos/videos with Dropbox
Dropbox - The official app
Tons of GPS apps, Navigon, TomTom, CoPilot, Sygic, etc... all updated, TeleAtlas and NAVTEQ maps
Galileo - Free maps, great app
SpeedTracker - Map tracking app
Instacast - Awesome podcasts app
Soundhound - Music identification
TuneIn Radio - Awesome radio app
Games... Angry Birds, Fragger, Tiny Wings, DoodleJump, Plants vs Zombies, ZombieSmash, Cut the Rope, Osmos, Tetris, Lumines, Unblock Me.
Soulver - A fantastic calculator app
Groceries - Another fantastic app for grocery lists
Converter+ - Awesome
WhatsApp
iMessage
Built in Calendar that syncs with Google cal
Tons of website specific apps, eBay, operator/carrier apps, etc...



Yea, N9 has no ecosystem, when it has all the above apps then it'll have one and I'll consider it.