I'm a little curious on how you guys manage the contacts which have linkage to facebook contacts. In normal case, contacts with same name (match the name in facebook profile) will get linked automatically but we will have to manually join the contacts if the names are not the same. I know Google does not store the linkage info, so to avoid manually joining them again in the future (reason: change phone/rom), one could use Titanium Backup to backup and restore the whole contact data including the linkage of contacts. Now I'm wondering, will it works every time (across different rom/phone)? Or is there any better way of doing this?

I've been using TB to backup and restore my contact (to preserve the linkage) all these while but worry that it will not work one day coz I've manually joined quite a lot of contacts. So you meant the contact exported to sd card will have the linking info also? hmm...gonna try that then...

Titanium Backup can backup the contacts (including the linkage between contacts) and sms also, just looks for green color item in the list. I noticed one thing, previously in my HTC Magic, backing up the contact storage will back up the call logs as well, but this is not the case for SGS2, so I wonder where SGS stores its call logs?