I'm sorry to say Nokia Music+ service is not available in MY yet. I have asked a Nokia staff at FB about that matter and apparently it is due to music copyright issue/license.

I usually link them to my Microsoft(hotmail) account so that it is backed up to Microsoft server; if there are duplicate name/ contact details from either my Sim card/FB/Twitter, I will "link" them together so that my contacts are showing merged contact details.

To import from Sim, go to People hub, then select settings[...], there it should says import SIM contacts and there are other functions there too. Test with it.

If whatsapp hang often try restart phone or soft reset, as for what apps to be recommended, I would suggest
1. "Metrotube" for Youtube
2. "Fuse" for RSS feed/Google Reader
3. "WPCentral" for latest Windows Phone related news.
4. "Viber" now with talk+msg
5. "TVShow" if you watch English TV series to keep track.
6. "Runtastic PRO" if you do running/cycling.
7. "Photosynth" for Panorama shots.
8. "Chronos Calendar" for replacing default Calendar.
9. "Battery Sense" for battery management.
10. "4th & Mayor" for foursquare.

Yes. I kena once Rm 14 outside.