For smsing. The big change would be getting used to the conversation layout which will also include IM messaging, all in one window. It's not like Symbian where you have tabs of Inbox, Sent, Outbox, Reports etc..... Watching videos will be better than the iPod when it comes to not having to convert alot. The n900 will play many untouched .avis and .mp4. Net browsing is good. You have more choice with Firefox and Opera. It's quite speedy. The is camera is ok. Nothing ground shattering. The basic functions are there. You can open the facebook website in it's full glory. But there are no neat apps that simplify using facebook like the iPod. There is one in the making. but it's not finished yet I believe.